尽管正确设置了php.ini，但“最大执行时间”错误

Question

I have been struggling with this for past one hour. I am using WAMP Local server on windows maching so everything is under my control. I am getting maximum execution time 60 seconds error when trying to import Wordpress xml file.

I have set these values in php.ini:

max_execution_time = 1200
memory_limit = 512M
max_input_time = -1

I have also edited my wp-config file : set_time_limit(0);

I restarted server after making changes. Still I get error

) Fatal error: Maximum execution time of 60 seconds exceeded in C:\wamp\www\xxa\wp-includes\wp-db.php on line 1285

Thanks Ahmar

Answer 1

This must have something to do with the hard coded max_execution_time set to 60.

I had the same issue with the WordPress Importer. Turned out it was because of the hard coded @set_time_limit( 60 ) in the wp-includes/functions.php file:

function wp_get_http( $url, $file_path = false, $red = 1 ) { @set_time_limit( 60 );

I commented out the set_time_limit( 60 ) call and it worked fine after that:

//@set_time_limit( 60 );

Answer 2

This problem can arise when the inital check performed by the plugin takes more than 30 seconds.

Please try either:

1. Adapting the wp-config.php: set_time_limit(60);

Important – If you are making changes in wp-config.php, then add this line above the “/* That's all, stop editing! Happy blogging. */” comment.

1. Adapting the /.htaccess file of your WordPress installation php_value max_execution_time 60

2. Adapting the php.ini file max_execution_time = 60;

Preferably the changes are made in the wp-config.php file.

Please let me know if that solves the issue.

Thanks

Answer 3

I had to test register_shutdown_function() myself -- I didn't think it'd run. After all, how can a user function run once there's no more memory, or execution time has elapsed? I was surprised to learn that shutdown functions do run, even in an OOM situation, or when execution time has been exceded. Proof of concept: To test memory limit:

<?php
function asdf() { echo "omg\n"; }
register_shutdown_function('asdf');

ini_set('memory_limit', '1000');

$x = '';
while(true) {
 $x .= 'lkajsdlfkjasldkfjlaskdfjasldkfj';
}

Output:

PHP Fatal error:  Allowed memory size of 262144 bytes exhausted (tried to allocate 169540 bytes) in /home/scratch.php on line 9
PHP Stack trace:
PHP   1. {main}() /home/scratch.php:0

Fatal error: Allowed memory size of 262144 bytes exhausted (tried to allocate 169540 bytes) in /home/scratch.php on line 9

Call Stack:
    0.0002      81360   1. {main}() /home/scratch.php:0

omg

To test execution time:

cat scratch.php
<?php
function asdf() { echo "omg\n"; }
register_shutdown_function('asdf');

set_time_limit(1);

while(true) {}

Output:

PHP Fatal error:  Maximum execution time of 1 second exceeded in /home/scratch.php on line 7
PHP Stack trace:
PHP   1. {main}() /home/scratch.php:0

Fatal error: Maximum execution time of 1 second exceeded in /home/scratch.php on line 7

Call Stack:
    0.0002      80200   1. {main}() /home/scratch.php:0

omg

Note that, to get your message to display before PHP's error output, you'd have to disable PHP's error output entirely. Which is best practice for a production site anyway.