Count the running time of PHP program and set the maximum running time of PHP

<?php $pagestartime=microtime(); ?> <?php Procedures section ?> <?php $pageendtime = microtime(); echo $pageendtime."
"; $starttime = explode(" ",$pagestartime); $endtime = explode(" ",$pageendtime); $totaltime = $endtime[0]-$starttime[0]+$endtime[1]-$starttime[1]; $timecost = sprintf("%s",$totaltime); echo " Page runtime : $timecost second "; ?>

Generally speaking , default PHP The maximum running time of the program is 30s, If your program runs beyond this time limit , Then there will be something similar Maximum execution time of 30 seconds exceeded The error of .

There are several solutions ：

First, check whether you are doing something stupid , It consumes a lot of CPU Resources and time , If you really need the program to run for a long time to get results , Then you can.

1> stay php.ini Increase the running time ：

max_execution_time=300
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2> stay PHP Add the following code to the file

ini_set(‘max_execution_time’, 300); //300 seconds = 5 minutes
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3> Use .htaccess File to increase running time ：

Other common configuration references ：

If your environment is wordpress, Then please config.php in , add to ：

define(‘WP_MEMORY_LIMIT’, ‘128M’);
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If you use other frameworks , You can modify

ini_set(‘memory_limit’, ‘128M’);

By default , php.ini The maximum execution time configured in is 30 second , This is from php.ini Medium max_execution_time Variable . If we have a job that takes a lot of time , For example, send a lot of emails , Or a huge statistical analysis of data . Even if the task is not completed , The server will 30 Seconds later, forcibly abort the executing program .

1, Two ways to modify the maximum execution time
（1） Directly modifying php.ini in max_execution_time The numerical .

（2） If you don't have permission to modify php.ini file , Or we want to set some pages separately . Then you can also PHP Set in the program page , The code is as follows （ The number 0 Indicates that there is no restriction on execution time ）.
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ini_set ( ‘max_execution_time’ , ‘0’ );

2, If you use IIS The server , Remember to revise “ Activity timed out ” Time
If it's in IIS Run under service PHP Program , You will find that after modification according to the previous method , An error will still be reported after a long operation . The error message is as follows ：
HTTP error 500.0 - Internal Server Error
C:\websoft\php\php-cgi.exe - FastCGI The process exceeded the configured request timeout

terms of settlement ： IIS -> FastCGI Set up -> double-click "php-cgi.exe" ->“ Activity timed out ” , Increase this value as needed .