PHP5.4的变化关注---What has changed in PHP 5.4.x

╰半橙微兮° 2022-06-12 00:09 155阅读 0赞

## [What has changed in PHP 5.4.x][]    ##

## Most improvements in PHP 5.4.x have no impact on existing code. There are a [few incompatibilities][] and [new features][] that should be considered, and code should be tested before switching PHP versions in production environments. ##

## 1. Backward Incompatible Changes  ：一些内容将不兼容  ##

1)不再支持安全模式，

2) 移除魔术引用，

3) 移除全局变量php.ini设置，

4) 移除 [Call-time pass by reference][]（如 call\_user\_func\_array('function', array(&$a) 不支持)

5)break/continue 不接受参数，但保留接受静态参数

6)必须设置时区timezone

# 7) 注意非数字数组键值 详看:[PHP5.4中一个需要注意的变化(Chained string offsets) ][PHP5.4_Chained string offsets] #

8) 数组转字符串提示   **`E_NOTICE`**  level error

8) 使用超全局变量做函数参数将导致致命错误

function foo($_GET, $_POST) {} 
    //在5.3是没问题的.
    //php5.4出现:Fatal error: Cannot re-assign auto-global variable _GET in /opt/php-5.4.0/test.php on line 4

Although most existing PHP 5 code should work without changes, please take note of some backward incompatible changes:

*  [Safe mode][] is no longer supported. Any applications that rely on safe mode may need adjustment, in terms of security.
 *  [Magic quotes][] has been removed. Applications relying on this feature may need to be updated, to avoid security issues. [get\_magic\_quotes\_gpc()][get_magic_quotes_gpc] and [get\_magic\_quotes\_runtime()][get_magic_quotes_runtime] now always return **`FALSE`**.[set\_magic\_quotes\_runtime()][set_magic_quotes_runtime] raises an **`E_CORE_ERROR`** level error.
 *  The [register\_globals][register_globals] and [register\_long\_arrays][register_long_arrays] php.ini directives have been removed.
 *  [Call-time pass by reference][] has been removed.
 *  The [break][] and [continue][] statements no longer accept variable arguments (e.g., **break 1 + foo() \* $bar;**). Static arguments still work, such as **break 2;**.
 *  In the [date and time extension][], the timezone can no longer be set using the TZ environment variable. Instead you have to specify a timezone using the [date.timezone][] php.ini option or [date\_default\_timezone\_set()][date_default_timezone_set] function. PHP will no longer attempt to guess the timezone, and will instead fall back to "UTC" and issue a **`E_WARNING`**.
 *  Non-numeric string offsets - e.g. **$a\['foo'\]** where $a is a string - now return false on [isset()][isset] and true on [empty()][empty], and produce a **`E_WARNING`** if you try to use them. Offsets of types double, bool and null produce a **`E_NOTICE`**. Numeric strings (e.g. **$a\['2'\]**) still work as before. Note that offsets like **'12.3'** and **'5 foobar'** are considered non-numeric and produce a **`E_WARNING`**, but are converted to 12 and 5 respectively, for backward compatibility reasons. Note: Following code returns different result. $str='abc';var\_dump(isset($str\['x'\])); // false for PHP 5.4 or later, but true for 5.3 or less
 *  Converting an array to a string will now generate an **`E_NOTICE`** level error, but the result of the cast will still be the string **"Array"**.
 *  Turning **`NULL`**, **`FALSE`**, or an empty string into an object by adding a property will now emit an **`E_WARNING`** level error, instead of **`E_STRICT`**.
 *  Parameter names that shadow super globals now cause a fatal error. This prohibits code like **function foo($\_GET, $\_POST) \{\}**.
 *  The Salsa10 and Salsa20 [hash algorithms][] have been removed.
 *  [array\_combine()][array_combine] now returns **array()** instead of **`FALSE`** when two empty arrays are provided as parameters.
 *  If you use [htmlentities()][htmlentities] with asian character sets, it works like [htmlspecialchars()][htmlspecialchars] - this has always been the case in previous versions of PHP, but now an **`E_STRICT`** level error is emitted.

The following keywords are now [reserved][], and may not be used as names by functions, classes, etc.

*  [**trait**][trait]
 *  **callable**
 *  [**insteadof**][trait]

The following functions have been removed from PHP:

*  [define\_syslog\_variables()][define_syslog_variables]
 *  [import\_request\_variables()][import_request_variables]
 *  [session\_is\_registered()][session_is_registered], [session\_register()][session_register] and [session\_unregister()][session_unregister].
 *  The aliases [mysqli\_bind\_param()][mysqli_bind_param], [mysqli\_bind\_result()][mysqli_bind_result], [mysqli\_client\_encoding()][mysqli_client_encoding], [mysqli\_fetch()][mysqli_fetch], [mysqli\_param\_count()][mysqli_param_count], [mysqli\_get\_metadata()][mysqli_get_metadata], [mysqli\_send\_long\_data()][mysqli_send_long_data], mysqli::client\_encoding() and mysqli\_stmt::stmt().

## 2. New features 新功能 ##

1） [traits][trait]特性的功能相当使一个类可以存在两个父类。在php5.4之前，一个类不能继承两个父类。

2）数组可以类似c/c++写法

3）**Class::\{expr\}()** 这个写法有点迷糊

4）支持二进制数值，即二进制直接写赋值给变量：

$bin  = 0b1101;
    echo $bin;
     //13

而不必使用bin2dec转换成十进制

想看大鸟：[二进制直接量(binary number format) ][binary number format]

5）[上传进度支持(Upload progress in sessions) ][Upload progress in sessions]

6）php5.4可以编译成命令行模式的server

PHP 5.4.0 offers a wide range of new features:

*  Support for [traits][trait] has been added.
 *  Short array syntax has been added, e.g. **$a = \[1, 2, 3, 4\];** or **$a = \['one' => 1, 'two' => 2, 'three' => 3, 'four' => 4\];**.
 *  Function array dereferencing has been added, e.g. **foo()\[0\]**.
 *  [Closures][] now support **$this**.
 *  **<?=** is now always available, regardless of the [short\_open\_tag][short_open_tag] php.ini option.
 *  Class member access on instantiation has been added, e.g. **(new Foo)->bar()**.
 *  **Class::\{expr\}()** syntax is now supported.
 *  Binary number format has been added, e.g. **0b001001101**.
 *  Improved parse error messages and improved incompatible arguments warnings.
 *  The session extension can now track the [upload progress][] of files.
 *  Built-in development [web server in CLI mode][].

## Changes in SAPI modules ##

*  A new SAPI module named **cli-server** is now available.
 *  Added CLI option **--rz** which shows information of the named Zend extension.
 *  Added shortcut **\#inisetting=value** to change php.ini settings at run-time in interactive readline CLI
 *  Added apache compatible functions: [apache\_child\_terminate()][apache_child_terminate], [getallheaders()][getallheaders], [apache\_request\_headers()][apache_request_headers] and [apache\_response\_headers()][apache_response_headers] for FastCGI SAPI.
 *  PHP-FPM: Added the **process.max** setting, to control the number of processes that FPM can fork.

## 3 . Deprecated features in PHP 5.4.x 弃用的功能  ##

Deprecated functions:

*  [mcrypt\_generic\_end()][mcrypt_generic_end]
 *  [mysql\_list\_dbs()][mysql_list_dbs]

## 4. Changed Functions 变化的自带函数 ##

Several functions were given new, optional parameters in PHP 5.4:

PHP Core:

*  Added the optional **`limit`** parameter to [debug\_backtrace()][debug_backtrace] and [debug\_print\_backtrace()][debug_print_backtrace], to limit the amount of stack frames returned.
 *  [is\_link()][is_link] now works properly for symbolic links on Windows Vista or later. Earlier systems do not support symbolic links.

OpenSSL:

*  Added a no padding option to the [openssl\_encrypt()][openssl_encrypt] and [openssl\_decrypt()][openssl_decrypt] functions.

Intl:

*  [idn\_to\_ascii()][idn_to_ascii] and [idn\_to\_utf8()][idn_to_utf8] now take two extra parameters, one indicating the variant (IDNA 2003 or UTS \#46) and another, passed by reference, to return details about the operation in case UTS \#46 is chosen.

## 5. New Functions 新增的函数 ##

HP 5.4 introduced some new functions:

PHP Core:

*  [hex2bin()][hex2bin] 
 *  [http\_response\_code()][http_response_code]
 *  [get\_declared\_traits()][get_declared_traits]
 *  [getimagesizefromstring()][getimagesizefromstring]
 *  [stream\_set\_chunk\_size()][stream_set_chunk_size]
 *  [socket\_import\_stream()][socket_import_stream]
 *  [trait\_exists()][trait_exists]
 *  [header\_register\_callback()][header_register_callback]

[SPL:][SPL]

*  [class\_uses()][class_uses]

[Session:][Session]

*  [session\_status()][session_status]
 *  [session\_register\_shutdown()][session_register_shutdown]

[Mysqli:][Mysqli]

*  [mysqli\_error\_list()][mysqli_error_list]
 *  [mysqli\_stmt\_error\_list()][mysqli_stmt_error_list]

[Libxml:][Libxml]

*  [libxml\_set\_external\_entity\_loader()][libxml_set_external_entity_loader]

[LDAP:][LDAP]

*  [ldap\_control\_paged\_result()][ldap_control_paged_result]
 *  [ldap\_control\_paged\_result\_response()][ldap_control_paged_result_response]

[Intl:][Intl]

*  [transliterator\_create()][transliterator_create]
 *  [transliterator\_create\_from\_rules()][transliterator_create_from_rules]
 *  [transliterator\_create\_inverse()][transliterator_create_inverse]
 *  [transliterator\_get\_error\_code()][transliterator_get_error_code]
 *  [transliterator\_get\_error\_message()][transliterator_get_error_message]
 *  [transliterator\_list\_ids()][transliterator_list_ids]
 *  [transliterator\_transliterate()][transliterator_transliterate]

[Zlib:][Zlib]

*  [zlib\_decode()][zlib_decode]
 *  [zlib\_encode()][zlib_encode]

## 6 . New Classes and Interfaces 新增的类和接口 ##

The following classes were introduced in PHP 5.4.0:

[SPL][]:

*  [CallbackFilterIterator][]
 *  [RecursiveCallbackFilterIterator][]

[Reflection][]:

*  [ReflectionZendExtension][]

[Json][]:

*  [JsonSerializable][]

[Session][]:

*  [SessionHandler][]
 *  [SessionHandlerInterface][]

[Snmp][]:

*  [SNMP][]

[Intl][]:

*  [Transliterator][]
 *  [Spoofchecker][]

## 7. New Methods 新增的方法 ##

Several new methods were introduced in 5.4.0:

[XSL][]:

*  [XsltProcessor::setSecurityPrefs()][XsltProcessor_setSecurityPrefs]
 *  [XsltProcessor::getSecurityPrefs()][XsltProcessor_getSecurityPrefs]

[SPL][]:

*  [RegexIterator::getRegex()][RegexIterator_getRegex]
 *  [SplObjectStorage::getHash()][SplObjectStorage_getHash]
 *  [DirectoryIterator::getExtension()][DirectoryIterator_getExtension]
 *  [SplDoublyLinkedList::serialize()][SplDoublyLinkedList_serialize]
 *  [SplDoublyLinkedList::unserialize()][SplDoublyLinkedList_unserialize]
 *  [SplFileInfo::getExtension()][SplFileInfo_getExtension]
 *  [SplFileObject::fputcsv()][SplFileObject_fputcsv]
 *  **SplQueue::serialize()**
 *  **SplQueue::unserialize()**
 *  **SplStack::serialize()**
 *  **SplStack::unserialize()**
 *  **SplTempFileObject::fputcsv()**

[Reflection][]:

*  [ReflectionExtension::isPersistent()][ReflectionExtension_isPersistent]
 *  [ReflectionExtension::isTemporary()][ReflectionExtension_isTemporary]
 *  [ReflectionClass::isCloneable()][ReflectionClass_isCloneable]

[Closure][]:

*  [Closure::bind()][Closure_bind]
 *  [Closure::bindTo()][Closure_bindTo]

[PDO\_dblib][PDO_dblib]:

*  **PDO::newRowset()**

[StreamWrapper][]:

*  [StreamWrapper::stream\_metadata()][StreamWrapper_stream_metadata]
 *  [StreamWrapper::stream\_truncate()][StreamWrapper_stream_truncate]

## 8. Removed Extensions 移除扩展sqlite ##

These extensions have been moved to PECL and are no longer part of the PHP distribution. The PECL package versions of these extensions will be created according to user demand.

*  [sqlite][] - Note that ext/sqlite3 and ext/pdo\_sqlite are not affected

## 9 .Other changes to extensions 修改的扩展 ##

Changes in extension behavior, and new features:

*  [mysqli][Mysqli] - [mysqli\_result][mysqli_result] now implements [Traversable][]

*  [pdo\_mysql][pdo_mysql] - Removed support for linking with MySQL client libraries older than 4.1

*  The MySQL extensions [mysql][], [mysqli][Mysqli] and [PDO\_mysql][pdo_mysql] use [mysqlnd][] as the default library now. It is still possible to use libmysql by specifying a path to the configure options.

*  [mysqlnd][] - Added named pipes support

## 10. New Global Constants 新增的全局常量 ##

PHP Core:

*  **`ENT_DISALLOWED`**
 *  **`ENT_HTML401`**
 *  **`ENT_HTML5`**
 *  **`ENT_SUBSTITUTE`**
 *  **`ENT_XML1`**
 *  **`ENT_XHTML`**
 *  **`IPPROTO_IP`**
 *  **`IPPROTO_IPV6`**
 *  **`IPV6_MULTICAST_HOPS`**
 *  **`IPV6_MULTICAST_IF`**
 *  **`IPV6_MULTICAST_LOOP`**
 *  **`IP_MULTICAST_IF`**
 *  **`IP_MULTICAST_LOOP`**
 *  **`IP_MULTICAST_TTL`**
 *  **`MCAST_JOIN_GROUP`**
 *  **`MCAST_LEAVE_GROUP`**
 *  **`MCAST_BLOCK_SOURCE`**
 *  **`MCAST_UNBLOCK_SOURCE`**
 *  **`MCAST_JOIN_SOURCE_GROUP`**
 *  **`MCAST_LEAVE_SOURCE_GROUP`**

[Curl][]:

*  **`CURLOPT_MAX_RECV_SPEED_LARGE`**
 *  **`CURLOPT_MAX_SEND_SPEED_LARGE`**

[LibXML][Libxml]:

*  **`LIBXML_HTML_NODEFDTD`**
 *  **`LIBXML_HTML_NOIMPLIED`**
 *  **`LIBXML_PEDANTIC`**

[OpenSSL][]:

*  **`OPENSSL_CIPHER_AES_128_CBC`**
 *  **`OPENSSL_CIPHER_AES_192_CBC`**
 *  **`OPENSSL_CIPHER_AES_256_CBC`**
 *  **`OPENSSL_RAW_DATA`**
 *  **`OPENSSL_ZERO_PADDING`**

[Output buffering][]:

*  **`PHP_OUTPUT_HANDLER_CLEAN`**
 *  **`PHP_OUTPUT_HANDLER_CLEANABLE`**
 *  **`PHP_OUTPUT_HANDLER_DISABLED`**
 *  **`PHP_OUTPUT_HANDLER_FINAL`**
 *  **`PHP_OUTPUT_HANDLER_FLUSH`**
 *  **`PHP_OUTPUT_HANDLER_FLUSHABLE`**
 *  **`PHP_OUTPUT_HANDLER_REMOVABLE`**
 *  **`PHP_OUTPUT_HANDLER_STARTED`**
 *  **`PHP_OUTPUT_HANDLER_STDFLAGS`**
 *  **`PHP_OUTPUT_HANDLER_WRITE`**

[Sessions][Session]:

*  **`PHP_SESSION_ACTIVE`**
 *  **`PHP_SESSION_DISABLED`**
 *  **`PHP_SESSION_NONE`**

[Streams][]:

*  **`STREAM_META_ACCESS`**
 *  **`STREAM_META_GROUP`**
 *  **`STREAM_META_GROUP_NAME`**
 *  **`STREAM_META_OWNER`**
 *  **`STREAM_META_OWNER_NAME`**
 *  **`STREAM_META_TOUCH`**

[Zlib][]:

*  **`ZLIB_ENCODING_DEFLATE`**
 *  **`ZLIB_ENCODING_GZIP`**
 *  **`ZLIB_ENCODING_RAW`**

[Intl][]:

*  **`U_IDNA_DOMAIN_NAME_TOO_LONG_ERROR`**
 *  **`IDNA_CHECK_BIDI`**
 *  **`IDNA_CHECK_CONTEXTJ`**
 *  **`IDNA_NONTRANSITIONAL_TO_ASCII`**
 *  **`IDNA_NONTRANSITIONAL_TO_UNICODE`**
 *  **`INTL_IDNA_VARIANT_2003`**
 *  **`INTL_IDNA_VARIANT_UTS46`**
 *  **`IDNA_ERROR_EMPTY_LABEL`**
 *  **`IDNA_ERROR_LABEL_TOO_LONG`**
 *  **`IDNA_ERROR_DOMAIN_NAME_TOO_LONG`**
 *  **`IDNA_ERROR_LEADING_HYPHEN`**
 *  **`IDNA_ERROR_TRAILING_HYPHEN`**
 *  **`IDNA_ERROR_HYPHEN_3_4`**
 *  **`IDNA_ERROR_LEADING_COMBINING_MARK`**
 *  **`IDNA_ERROR_DISALLOWED`**
 *  **`IDNA_ERROR_PUNYCODE`**
 *  **`IDNA_ERROR_LABEL_HAS_DOT`**
 *  **`IDNA_ERROR_INVALID_ACE_LABEL`**
 *  **`IDNA_ERROR_BIDI`**
 *  **`IDNA_ERROR_CONTEXTJ`**

[Json][]:

*  **`JSON_PRETTY_PRINT`**
 *  **`JSON_UNESCAPED_SLASHES`**
 *  **`JSON_NUMERIC_CHECK`**
 *  **`JSON_UNESCAPED_UNICODE`**
 *  **`JSON_BIGINT_AS_STRING`**

## 11. Changes to INI file handling  php.ini的设置变化 ##

he following php.ini directives have been removed:

*  [register\_globals][register_globals] and [register\_long\_arrays][register_long_arrays]
 *  [magic\_quotes\_gpc][magic_quotes_gpc], [magic\_quotes\_runtime][magic_quotes_runtime], and [magic\_quotes\_sybase][magic_quotes_sybase]
 *  [allow\_call\_time\_pass\_reference][allow_call_time_pass_reference]
 *  [define\_syslog\_variables][define_syslog_variables 1]
 *  [highlight.bg][]
 *  [session.bug\_compat\_42][session.bug_compat_42] and [session.bug\_compat\_warn][session.bug_compat_warn]
 *  [y2k\_compliance][y2k_compliance]
 *  [safe\_mode][safe_mode], [safe\_mode\_gid][safe_mode_gid], [safe\_mode\_include\_dir][safe_mode_include_dir], [safe\_mode\_exec\_dir][safe_mode_exec_dir], [safe\_mode\_allowed\_env\_vars][safe_mode_allowed_env_vars], and [safe\_mode\_protected\_env\_vars][safe_mode_protected_env_vars]

The following php.ini directives have been added:

*  [cli.pager][] and [cli.prompt][] for CLI SAPI using readline in interactive mode.
 *  [cli\_server.color][cli_server.color] to enable the built-in development web server to use ANSI color coding in terminal output.
 *  [max\_input\_vars][max_input_vars] - specifies how many GET/POST/COOKIE input variables may be accepted.
 *  [zend.multibyte][] - to control the new multibyte support.
 *  [zend.script\_encoding][zend.script_encoding] - This value will be used unless a "declare(encoding=...)" directive appears at the top of the script.
 *  [zend.signal\_check][zend.signal_check] - to check for replaced signal handlers on shutdown.
 *  [session.upload\_progress.enabled][session.upload_progress.enabled], [session.upload\_progress.cleanup][session.upload_progress.cleanup], [session.upload\_progress.prefix][session.upload_progress.prefix], [session.upload\_progress.name][session.upload_progress.name], [session.upload\_progress.freq][session.upload_progress.freq], [session.upload\_progress.min\_freq][session.upload_progress.min_freq]
 *  [enable\_post\_data\_reading][enable_post_data_reading] - When it's disabled, the POST data is not read (and processed)
 *  [windows\_show\_crt\_warning][windows_show_crt_warning] - This directive shows the Windows CRT warnings when enabled. These warnings were displayed by default until now.

The following php.ini. directives have been changed:

*  [session.entropy\_file][session.entropy_file] now defaults to /dev/random or /dev/urandom depending on what has been guessed at compile time.
 *  [session.entropy\_length][session.entropy_length] now defaults to 32.

## 12. Other changes 别的修改 ##

*  The default character set for [htmlspecialchars()][htmlspecialchars] and [htmlentities()][htmlentities] is now **UTF-8**, instead of **ISO-8859-1**. Note that changing your output charset via the [default\_charset][default_charset] configuration setting does not affect htmlspecialchars/htmlentities unless you are passing "" (an empty string) as the encoding parameter to your [htmlspecialchars()][htmlspecialchars]/[htmlentities()][htmlentities] calls. Generally we do not recommend doing this because you should be able to change your output charset without affecting the runtime charset used by these functions. The safest approach is to explicitly set the charset on each call to [htmlspecialchars()][htmlspecialchars] and [htmlentities()][htmlentities].
 *  **`E_ALL`** now includes **`E_STRICT`** level errors in the [error\_reporting][error_reporting] configuration directive.
 *  [SNMP][Snmp] now has an OOP API. Functions now return **`FALSE`** on every error condition including SNMP-related (no such instance, end of MIB, etc). Thus, in particular, breaks previous behavior of get/walk functions returning an empty string on SNMP-related errors. Multi OID get/getnext/set queries are now supported. Dropped UCD-SNMP compatibility code, consider upgrading to net-snmp v5.3+, Net-SNMP v5.4+ is required for Windows version. In sake of adding support for IPv6 DNS name resolution of remote SNMP agent (peer) is done by extension now, not by Net-SNMP library anymore.
 *  [OpenSSL][] now supports AES.
 *  [CLI SAPI][] doesn't terminate any more on fatal errors when using interactive mode with readline support.
 *  [$\_SERVER\['REQUEST\_TIME\_FLOAT'\]][SERVER_REQUEST_TIME_FLOAT] has been added to include microsecond precision.
 *  Added new hash algorithms: fnv132, fnv164, joaat
 *  Chained string offsets - e.g. $a\[0\]\[0\] where $a is a string - now work.
 *  Arrays cast from [SimpleXMLElement][] now always contain all nodes instead of just the first matching node. All [SimpleXMLElement][] children are now always printed when using [var\_dump()][var_dump], [var\_export()][var_export] and [print\_r()][print_r].
 *  It's now possible to enforce the class' [\_\_construct][construct] arguments in an abstract constructor in the base class.

[What has changed in PHP 5.4.x]: http://cn.php.net/manual/zh/migration54.php
[few incompatibilities]: http://cn.php.net/manual/zh/migration54.incompatible.php
[new features]: http://cn.php.net/manual/zh/migration54.new-features.php
[Call-time pass by reference]: http://cn.php.net/manual/zh/language.references.pass.php
[PHP5.4_Chained string offsets]: http://www.laruence.com/2011/11/28/2317.html
[Safe mode]: http://cn.php.net/manual/zh/features.safe-mode.php
[Magic quotes]: http://cn.php.net/manual/zh/security.magicquotes.php
[get_magic_quotes_gpc]: http://cn.php.net/manual/zh/function.get-magic-quotes-gpc.php
[get_magic_quotes_runtime]: http://cn.php.net/manual/zh/function.get-magic-quotes-runtime.php
[set_magic_quotes_runtime]: http://cn.php.net/manual/zh/function.set-magic-quotes-runtime.php
[register_globals]: http://cn.php.net/manual/zh/ini.core.php#ini.register-globals
[register_long_arrays]: http://cn.php.net/manual/zh/ini.core.php#ini.register-long-arrays
[break]: http://cn.php.net/manual/zh/control-structures.break.php
[continue]: http://cn.php.net/manual/zh/control-structures.continue.php
[date and time extension]: http://cn.php.net/manual/zh/book.datetime.php
[date.timezone]: http://cn.php.net/manual/zh/datetime.configuration.php#ini.date.timezone
[date_default_timezone_set]: http://cn.php.net/manual/zh/function.date-default-timezone-set.php
[isset]: http://cn.php.net/manual/zh/function.isset.php
[empty]: http://cn.php.net/manual/zh/function.empty.php
[hash algorithms]: http://cn.php.net/manual/zh/book.hash.php
[array_combine]: http://cn.php.net/manual/zh/function.array-combine.php
[htmlentities]: http://cn.php.net/manual/zh/function.htmlentities.php
[htmlspecialchars]: http://cn.php.net/manual/zh/function.htmlspecialchars.php
[reserved]: http://cn.php.net/manual/zh/reserved.php
[trait]: http://cn.php.net/manual/zh/language.oop5.traits.php
[define_syslog_variables]: http://cn.php.net/manual/zh/function.define-syslog-variables.php
[import_request_variables]: http://cn.php.net/manual/zh/function.import-request-variables.php
[session_is_registered]: http://cn.php.net/manual/zh/function.session-is-registered.php
[session_register]: http://cn.php.net/manual/zh/function.session-register.php
[session_unregister]: http://cn.php.net/manual/zh/function.session-unregister.php
[mysqli_bind_param]: http://cn.php.net/manual/zh/function.mysqli-bind-param.php
[mysqli_bind_result]: http://cn.php.net/manual/zh/function.mysqli-bind-result.php
[mysqli_client_encoding]: http://cn.php.net/manual/zh/function.mysqli-client-encoding.php
[mysqli_fetch]: http://cn.php.net/manual/zh/function.mysqli-fetch.php
[mysqli_param_count]: http://cn.php.net/manual/zh/function.mysqli-param-count.php
[mysqli_get_metadata]: http://cn.php.net/manual/zh/function.mysqli-get-metadata.php
[mysqli_send_long_data]: http://cn.php.net/manual/zh/function.mysqli-send-long-data.php
[binary number format]: http://www.laruence.com/2011/10/10/2232.html
[Upload progress in sessions]: http://www.laruence.com/2011/10/10/2217.html
[Closures]: http://cn.php.net/manual/zh/functions.anonymous.php
[short_open_tag]: http://cn.php.net/manual/zh/ini.core.php#ini.short-open-tag
[upload progress]: http://cn.php.net/manual/zh/session.upload-progress.php
[web server in CLI mode]: http://cn.php.net/manual/zh/features.commandline.webserver.php
[apache_child_terminate]: http://cn.php.net/manual/zh/function.apache-child-terminate.php
[getallheaders]: http://cn.php.net/manual/zh/function.getallheaders.php
[apache_request_headers]: http://cn.php.net/manual/zh/function.apache-request-headers.php
[apache_response_headers]: http://cn.php.net/manual/zh/function.apache-response-headers.php
[mcrypt_generic_end]: http://cn.php.net/manual/zh/function.mcrypt-generic-end.php
[mysql_list_dbs]: http://cn.php.net/manual/zh/function.mysql-list-dbs.php
[debug_backtrace]: http://cn.php.net/manual/zh/function.debug-backtrace.php
[debug_print_backtrace]: http://cn.php.net/manual/zh/function.debug-print-backtrace.php
[is_link]: http://cn.php.net/manual/zh/function.is-link.php
[openssl_encrypt]: http://cn.php.net/manual/zh/function.openssl-encrypt.php
[openssl_decrypt]: http://cn.php.net/manual/zh/function.openssl-decrypt.php
[idn_to_ascii]: http://cn.php.net/manual/zh/function.idn-to-ascii.php
[idn_to_utf8]: http://cn.php.net/manual/zh/function.idn-to-utf8.php
[hex2bin]: http://cn.php.net/manual/zh/function.hex2bin.php
[http_response_code]: http://cn.php.net/manual/zh/function.http-response-code.php
[get_declared_traits]: http://cn.php.net/manual/zh/function.get-declared-traits.php
[getimagesizefromstring]: http://cn.php.net/manual/zh/function.getimagesizefromstring.php
[stream_set_chunk_size]: http://cn.php.net/manual/zh/function.stream-set-chunk-size.php
[socket_import_stream]: http://cn.php.net/manual/zh/function.socket-import-stream.php
[trait_exists]: http://cn.php.net/manual/zh/function.trait-exists.php
[header_register_callback]: http://cn.php.net/manual/zh/function.header-register-callback.php
[SPL]: http://cn.php.net/manual/zh/book.spl.php
[class_uses]: http://cn.php.net/manual/zh/function.class-uses.php
[Session]: http://cn.php.net/manual/zh/book.session.php
[session_status]: http://cn.php.net/manual/zh/function.session-status.php
[session_register_shutdown]: http://cn.php.net/manual/zh/function.session-register-shutdown.php
[Mysqli]: http://cn.php.net/manual/zh/book.mysqli.php
[mysqli_error_list]: http://cn.php.net/manual/zh/mysqli.error-list.php
[mysqli_stmt_error_list]: http://cn.php.net/manual/zh/mysqli-stmt.error-list.php
[Libxml]: http://cn.php.net/manual/zh/book.libxml.php
[libxml_set_external_entity_loader]: http://cn.php.net/manual/zh/function.libxml-set-external-entity-loader.php
[LDAP]: http://cn.php.net/manual/zh/book.ldap.php
[ldap_control_paged_result]: http://cn.php.net/manual/zh/function.ldap-control-paged-result.php
[ldap_control_paged_result_response]: http://cn.php.net/manual/zh/function.ldap-control-paged-result-response.php
[Intl]: http://cn.php.net/manual/zh/book.intl.php
[transliterator_create]: http://cn.php.net/manual/zh/transliterator.create.php
[transliterator_create_from_rules]: http://cn.php.net/manual/zh/transliterator.createfromrules.php
[transliterator_create_inverse]: http://cn.php.net/manual/zh/transliterator.createinverse.php
[transliterator_get_error_code]: http://cn.php.net/manual/zh/transliterator.geterrorcode.php
[transliterator_get_error_message]: http://cn.php.net/manual/zh/transliterator.geterrormessage.php
[transliterator_list_ids]: http://cn.php.net/manual/zh/transliterator.listids.php
[transliterator_transliterate]: http://cn.php.net/manual/zh/transliterator.transliterate.php
[Zlib]: http://cn.php.net/manual/zh/book.zlib.php
[zlib_decode]: http://cn.php.net/manual/zh/function.zlib-decode.php
[zlib_encode]: http://cn.php.net/manual/zh/function.zlib-encode.php
[CallbackFilterIterator]: http://cn.php.net/manual/zh/class.callbackfilteriterator.php
[RecursiveCallbackFilterIterator]: http://cn.php.net/manual/zh/class.recursivecallbackfilteriterator.php
[Reflection]: http://cn.php.net/manual/zh/book.reflection.php
[ReflectionZendExtension]: http://cn.php.net/manual/zh/class.reflectionzendextension.php
[Json]: http://cn.php.net/manual/zh/book.json.php
[JsonSerializable]: http://cn.php.net/manual/zh/class.jsonserializable.php
[SessionHandler]: http://cn.php.net/manual/zh/class.sessionhandler.php
[SessionHandlerInterface]: http://cn.php.net/manual/zh/class.sessionhandlerinterface.php
[Snmp]: http://cn.php.net/manual/zh/book.snmp.php
[SNMP]: http://cn.php.net/manual/zh/class.snmp.php
[Transliterator]: http://cn.php.net/manual/zh/class.transliterator.php
[Spoofchecker]: http://cn.php.net/manual/zh/class.spoofchecker.php
[XSL]: http://cn.php.net/manual/zh/book.xsl.php
[XsltProcessor_setSecurityPrefs]: http://cn.php.net/manual/zh/xsltprocessor.setsecurityprefs.php
[XsltProcessor_getSecurityPrefs]: http://cn.php.net/manual/zh/xsltprocessor.getsecurityprefs.php
[RegexIterator_getRegex]: http://cn.php.net/manual/zh/regexiterator.getregex.php
[SplObjectStorage_getHash]: http://cn.php.net/manual/zh/splobjectstorage.gethash.php
[DirectoryIterator_getExtension]: http://cn.php.net/manual/zh/directoryiterator.getextension.php
[SplDoublyLinkedList_serialize]: http://cn.php.net/manual/zh/spldoublylinkedlist.serialize.php
[SplDoublyLinkedList_unserialize]: http://cn.php.net/manual/zh/spldoublylinkedlist.unserialize.php
[SplFileInfo_getExtension]: http://cn.php.net/manual/zh/splfileinfo.getextension.php
[SplFileObject_fputcsv]: http://cn.php.net/manual/zh/splfileobject.fputcsv.php
[ReflectionExtension_isPersistent]: http://cn.php.net/manual/zh/reflectionextension.ispersistent.php
[ReflectionExtension_isTemporary]: http://cn.php.net/manual/zh/reflectionextension.istemporary.php
[ReflectionClass_isCloneable]: http://cn.php.net/manual/zh/reflectionclass.iscloneable.php
[Closure]: http://cn.php.net/manual/zh/class.closure.php
[Closure_bind]: http://cn.php.net/manual/zh/closure.bind.php
[Closure_bindTo]: http://cn.php.net/manual/zh/closure.bindto.php
[PDO_dblib]: http://cn.php.net/manual/zh/ref.pdo-dblib.php
[StreamWrapper]: http://cn.php.net/manual/zh/class.streamwrapper.php
[StreamWrapper_stream_metadata]: http://cn.php.net/manual/zh/streamwrapper.stream-metadata.php
[StreamWrapper_stream_truncate]: http://cn.php.net/manual/zh/streamwrapper.stream-truncate.php
[sqlite]: http://cn.php.net/manual/zh/book.sqlite.php
[mysqli_result]: http://cn.php.net/manual/zh/class.mysqli-result.php
[Traversable]: http://cn.php.net/manual/zh/class.traversable.php
[pdo_mysql]: http://cn.php.net/manual/zh/ref.pdo-mysql.php
[mysql]: http://cn.php.net/manual/zh/book.mysql.php
[mysqlnd]: http://cn.php.net/manual/zh/book.mysqlnd.php
[Curl]: http://cn.php.net/manual/zh/book.curl.php
[OpenSSL]: http://cn.php.net/manual/zh/book.openssl.php
[Output buffering]: http://cn.php.net/manual/zh/book.outcontrol.php
[Streams]: http://cn.php.net/manual/zh/book.stream.php
[magic_quotes_gpc]: http://cn.php.net/manual/zh/info.configuration.php#ini.magic-quotes-gpc
[magic_quotes_runtime]: http://cn.php.net/manual/zh/info.configuration.php#ini.magic-quotes-runtime
[magic_quotes_sybase]: http://cn.php.net/manual/zh/sybase.configuration.php#ini.magic-quotes-sybase
[allow_call_time_pass_reference]: http://cn.php.net/manual/zh/ini.core.php#ini.allow-call-time-pass-reference
[define_syslog_variables 1]: http://cn.php.net/manual/zh/network.configuration.php#ini.define-syslog-variables
[highlight.bg]: http://cn.php.net/manual/zh/misc.configuration.php#ini.syntax-highlighting
[session.bug_compat_42]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.bug-compat-42
[session.bug_compat_warn]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.bug-compat-warn
[y2k_compliance]: http://cn.php.net/manual/zh/ini.core.php#ini.y2k-compliance
[safe_mode]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode
[safe_mode_gid]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode-gid
[safe_mode_include_dir]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode-include-dir
[safe_mode_exec_dir]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode-exec-dir
[safe_mode_allowed_env_vars]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode-allowed-env-vars
[safe_mode_protected_env_vars]: http://cn.php.net/manual/zh/ini.sect.safe-mode.php#ini.safe-mode-protected-env-vars
[cli.pager]: http://cn.php.net/manual/zh/readline.configuration.php#ini.cli.pager
[cli.prompt]: http://cn.php.net/manual/zh/readline.configuration.php#ini.cli.prompt
[cli_server.color]: http://cn.php.net/manual/zh/features.commandline.ini.php#ini.cli-server.color
[max_input_vars]: http://cn.php.net/manual/zh/info.configuration.php#ini.max-input-vars
[zend.multibyte]: http://cn.php.net/manual/zh/ini.core.php#ini.zend.multibyte
[zend.script_encoding]: http://cn.php.net/manual/zh/ini.core.php#ini.zend.script-encoding
[zend.signal_check]: http://cn.php.net/manual/zh/ini.core.php#ini.zend.signal-check
[session.upload_progress.enabled]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.enabled
[session.upload_progress.cleanup]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.cleanup
[session.upload_progress.prefix]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.prefix
[session.upload_progress.name]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.name
[session.upload_progress.freq]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.freq
[session.upload_progress.min_freq]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.upload-progress.min-freq
[enable_post_data_reading]: http://cn.php.net/manual/zh/ini.core.php#ini.enable-post-data-reading
[windows_show_crt_warning]: http://cn.php.net/manual/zh/ini.core.php#ini.windows-show-crt-warning
[session.entropy_file]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.entropy-file
[session.entropy_length]: http://cn.php.net/manual/zh/session.configuration.php#ini.session.entropy-length
[default_charset]: http://cn.php.net/manual/zh/ini.core.php#ini.default-charset
[error_reporting]: http://cn.php.net/manual/zh/errorfunc.configuration.php#ini.error-reporting
[CLI SAPI]: http://cn.php.net/manual/zh/features.commandline.php
[SERVER_REQUEST_TIME_FLOAT]: http://cn.php.net/manual/zh/language.variables.superglobals.php
[SimpleXMLElement]: http://cn.php.net/manual/zh/class.simplexmlelement.php
[var_dump]: http://cn.php.net/manual/zh/function.var-dump.php
[var_export]: http://cn.php.net/manual/zh/function.var-export.php
[print_r]: http://cn.php.net/manual/zh/function.print-r.php
[construct]: http://cn.php.net/manual/zh/language.oop5.decon.php