php tab代码,PHP中实现crontab代码分享

矫情吗；* 2022-10-22 07:38 205阅读 0赞

MysqL、redis)读取

$crontab = file('./crontab');

$now = $\_SERVER\['REQUEST\_TIME'\];

foreach ( $crontab as $cron ) \{

$slices = preg\_split("/\[\\s\]+/",$cron,6);

if( count($slices) !== 6 ) continue;

$cmd = array\_pop($slices);

$cron\_time = implode(' ',$slices);

$next\_time = Crontab::parse($cron\_time,$now);

if ( $next\_time !== $now ) continue;

$pid = pcntl\_fork();

if ($pid == -1) \{

die('could not fork');

\} else if ($pid) \{

// we are the parent

pcntl\_wait($status,WNOHANG); //Protect against Zombie children

\} else \{

// we are the child

\`$cmd\`;

exit;

/\* PHP-Crontab">https://github.com/jkonieczny/PHP-Crontab \*/

class Crontab \{

/\*\*

\* Finds next execution time(stamp) parsin crontab Syntax,

\* after given starting timestamp (or current time if ommited)

\* @param string $\_cron\_string:

\* 0 1 2 3 4

\* \* \* \* \* \*

\* - - - - -

\* | | | | |

\* | | | | +----- day of week (0 - 6) (Sunday=0)

\* | | | +------- month (1 - 12)

\* | | +--------- day of month (1 - 31)

\* | +----------- hour (0 - 23)

\* +------------- min (0 - 59)

\* @param int $\_after\_timestamp timestamp \[default=current timestamp\]

\* @return int unix timestamp - next execution time will be greater

\* than given timestamp (defaults to the current timestamp)

\* @throws InvalidArgumentException

\*/

public static function parse($\_cron\_string,$\_after\_timestamp=null)

if(!preg\_match('/^((\\\*(\\/\[0-9\]+)?)|\[0-9\\-\\,\\/\]+)\\s+((\\\*(\\/\[0-9\]+)?)|\[0-9\\-\\,\\/\]+)$/i',trim($\_cron\_string)))\{

throw new InvalidArgumentException("Invalid cron string: ".$\_cron\_string);

if($\_after\_timestamp && !is\_numeric($\_after\_timestamp))\{

throw new InvalidArgumentException("\\$\_after\_timestamp must be a valid unix timestamp ($\_after\_timestamp given)");

$cron = preg\_split("/\[\\s\]+/i",trim($\_cron\_string));

$start = empty($\_after\_timestamp)?time():$\_after\_timestamp;

$date = array( 'minutes' =>self::\_parseCronNumbers($cron\[0\],59),

'hours' =>self::\_parseCronNumbers($cron\[1\],23),

'dom' =>self::\_parseCronNumbers($cron\[2\],1,31),

'month' =>self::\_parseCronNumbers($cron\[3\],12),

'dow' =>self::\_parseCronNumbers($cron\[4\],6),

);

// limited to time()+366 - no need to check more than 1year ahead

for($i=0;$i<=60\*60\*24\*366;$i+=60)\{

if( in\_array(intval(date('j',$start+$i)),$date\['dom'\]) &&

in\_array(intval(date('n',$date\['month'\]) &&

in\_array(intval(date('w',$date\['dow'\]) &&

in\_array(intval(date('G',$date\['hours'\]) &&

in\_array(intval(date('i',$date\['minutes'\])

)\{

return $start+$i;

return null;

/\*\*

\* get a single cron style notation and parse it into numeric value

\* @param string $s cron string element

\* @param int $min minimum possible value

\* @param int $max maximum possible value

\* @return int parsed number

\*/

protected static function \_parseCronNumbers($s,$min,$max)

$result = array();

$v = explode(',',$s);

foreach($v as $vv)\{

$vvv = explode('/',$vv);

$step = empty($vvv\[1\])?1:$vvv\[1\];

$vvvv = explode('-',$vvv\[0\]);

$\_min = count($vvvv)==2?$vvvv\[0\]:($vvv\[0\]=='\*'?$min:$vvv\[0\]);

$\_max = count($vvvv)==2?$vvvv\[1\]:($vvv\[0\]=='\*'?$max:$vvv\[0\]);

for($i=$\_min;$i<=$\_max;$i+=$step)\{

$result\[$i\]=intval($i);

ksort($result);

return $result;

php tab代码,PHP中实现crontab代码分享

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