str_replace函数_PHP str_replace（）函数与示例

绝地灬酷狼 2023-03-05 15:50 12阅读 0赞

str\_replace函数

## PHP str\_replace()函数 **(**PHP str\_replace() Function**)** ##

**str\_replace() function** is used to replace a given substring with specified substring in the string.

**str\_replace()函数**用于将给定的子字符串替换为字符串中的指定子字符串。

**Syntax:**

**句法：**

str_replace(source_substring, target_substring, string, [count]);

Here,

这里，

*  source\_substring is the substring to be replaced in the string.
    
    source\_substring是要在字符串中替换的子字符串。
 *  target\_substring is the substring to replace with.
    
    target\_substring是要替换的子字符串。
 *  string is the main string in which we have to replace the substring.
    
    字符串是我们必须替换子字符串的主要字符串。
 *  count is an optional parameter and it is used to store the total number of replacements.
    
    count是一个可选参数，用于存储替换的总数。

**Examples:**

**例子：**

Input:
        str = "Hello guys, how are you?"
        find = "Hello"
        replace = "Hi"
        Output: "Hi guys, how are you?"

**PHP code:**

**PHP代码：**

<?php
    	$str = "Hello guys, how are you?";
    	$find = "Hello";
    	$replace = "Hi";
    	$target_str = str_replace($find, $replace, $str);
    	echo ($target_str . "\n");
    
    	$str = "Hello Hello this is Hello?";
    	$find = "Hello";
    	$replace = "Friends";
    	$target_str = str_replace($find, $replace, $str);
    	echo ($target_str . "\n");	
    	
    	//below, we will count total number of replacements
    	$str = "Hello Hello this is Hello?";
    	$find = "Hello";
    	$replace = "Friends";
    	$count = 0;
    	$target_str = str_replace($find, $replace, $str, $count);
    	echo ($target_str . "\n");
    	echo ("Total replacements: $count \n");	
    ?>

**Output**

**输出量**

Hi guys, how are you?
    Friends Friends this is Friends?
    Friends Friends this is Friends?
    Total replacements: 3

> 翻译自: [https://www.includehelp.com/php/str\_replace-function-with-example.aspx][https_www.includehelp.com_php_str_replace-function-with-example.aspx]

str\_replace函数

[https_www.includehelp.com_php_str_replace-function-with-example.aspx]: https://www.includehelp.com/php/str_replace-function-with-example.aspx