Is it possible to get Max Execution timeout notification so that i can use code clean up operations before the php script stops running?
Basically, i am trying to create a script that can do some changes/modifications to my database which has huge data pile. Also, this php script execution can be paused/resumed using a filelock.
You can either use set_error_handler() or register_shutdown_function().
Edit: See also: max execution time error handling
If you set 0 to set_time_limit, it will never stop :)
You can increase the limit time inside your code using:
set_time_limit(300); //time in seconds
ini_set('max_execution_time', 300); //300 seconds = 5 minutes
or
changing the max_execution_time parameter inside your php.ini.
The default time is 30 seconds.
Related
Function, which waits about one day in the background and then execute another.
Like:
function Sleep(){
sleep( /* One Day */ );
Run();
}
function Run(){
//One Day later,
//execute code.
}
Or maby something like this (this is fictional):
class Waiter extends Timer{
$time = 0;
function __construct($time){
$this->time = $time;
}
function onDelay(){
//One day Later.
}
}
$wait = new Waiter( /* One Day */ );
Is there a good solution?
Or is the sleep() function also okey?
But I have to say, that the execution timeout is 30 seconds.
Using a cronjob is the correct solution for this problem. If for some reason you cannot use it, make sure to add ignore_user_abort(1) and set_time_limit(0); at the top of the php script.
int ignore_user_abort ([ bool $value ] )
When running PHP as a command line script, and the script's tty goes
away without the script being terminated then the script will die the
next time it tries to write anything, unless value is set to TRUE
bool set_time_limit ( int $seconds )
Set the number of seconds a script is allowed to run. If this is
reached, the script returns a fatal error. The default limit is 30
seconds or, if it exists, the max_execution_time value defined in the
php.ini.
When called, set_time_limit() restarts the timeout counter from zero.
In other words, if the timeout is the default 30 seconds, and 25
seconds into script execution a call such as set_time_limit(20) is
made, the script will run for a total of 45 seconds before timing out.
As you said, the execution time is 30 seconds, the overall script is forced to an end after 30 seconds. It can't wait longer.
As already suggested, you could use a cron job.
If your problem is not regular recurrent, you could write a little script, which writes the time (with date) when the function should execute into a file (or a database). The cron then would execute every hour (or if its important, every minute) and checks, if the function needs to be executed
Crons have been mentioned, but there's a second option - queueing.
https://en.wikipedia.org/wiki/Message_queue
There is a wide variety of queue software available, from ones you install yourself like Beanstalk or RabbitMQ to hosted ones in the cloud like Amazon SQS or IronMQ.
set_time_limit(0) will reset the counter to 0, but I would need to call it like every 30 seconds or so in order for the script to continue running without breaking in error.
Is there any way I could just disable this time limit stuff, without having to call this function repeatedly?
Setting the limit to 0 disables it entirely. Setting it to non-zero resets the countdown to that value. e.g.
while(true) {
set_time_limit(30);
sleep(29);
}
Will run (virtually) indefinitely, because the limit keeps getting reset to 30, one second before it was about to expire.
You should only need to call set_time_limit(0) once, unless you are running PHP in safe-mode which a lot of shared web hosts do
Read the docs for set_time_limit() here
I have this PHP code:
<?php
include_once("connect_to_mysql.php");
$max=300;
while($max--)
{
sleep(1);
doMyThings();
}
?>
it is supposed to repeat a mysql query 300 times with gap of 1 second between each. But the problem is after a minute or so in the browser i get this message: No Data Received. Unable to load the webpage because the server sent no data.
The problem is the following: Your code will at least (without considering the amount of time needed by doMyThings()) last 300 seconds. Most PHP environments set the default script running time to about 60 secs, the script stops and nothing is printed out.
Next thing is (if script execution time is set high enough to allow long running scripts), the script has to run until its finished (that is, ~300 secs) and after that, data is written onto the output stream. Until there, you won't see any output.
To circumvent those two problems, see this code:
<?php
// If allowed, unlimited script execution time
set_time_limit(0);
// End output buffering
ob_end_flush();
include_once("connect_to_mysql.php");
$max=300;
// End output buffering IE and Safari Workaround
// They will only display the webpage if it's completely loaded or
// at least 5000 bytes have been "printed".
for($i=0;$i<5000;$i++)
{
echo ' ';
}
while($max > 0)
{
sleep(1);
doMyThings();
$max--;
// Manual output buffering
ob_flush();
flush();
}
?>
Maybe this post is also of interest to you: Outputting exec() ping result progressively
The browser will not wait a whole 5 minutes for you to complete your queries.
You need to find a different solution. Consider executing the PHP script in CLI.
It seems that you have a timeout executing 300 times doMyThings();
You can try with set_time_limit(0);
Set the number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 seconds or, if it exists, the max_execution_time value defined in the php.ini.
When you execute long time php code on server side, you need change max_execution_time directive in php.ini. But browser will not wait how long as you want so you need use async technology like AJAX
I use joomla connect to postgresql:
$db = JFactory::getDBO();
$db->setQuery($query);
$db->query();
$object = $db->loadAssocList();
Default timeout=30s. I want set timeout =120.
How set timeout of query? Thanks.
set_time_limit
Set the number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 seconds or, if it exists, the max_execution_time value defined in the php.ini.
When called, set_time_limit() restarts the timeout counter from zero. In other words, if the timeout is the default 30 seconds, and 25 seconds into script execution a call such as set_time_limit(20) is made, the script will run for a total of 45 seconds before timing out.
you need to use the standard php function
set_time_limit(120);
I have a PHP script in my Code Igniter application,
its run on server and fetch some data but its not running more than 2 minutes approx..
and when I run this without using code igniter its works properly..what may be the reason behind this?
thanks #air4x its works . by setting set_time_limit(300) in the system/core/CodeIgniter.php
if (function_exists("set_time_limit") == TRUE AND #ini_get("safe_mode") == 0)
{
#set_time_limit(300);
}
after setting this code script running well..
Try adding this before you run your code: set_time_limit(0);
More info: http://php.net/manual/en/function.set-time-limit.php
If that doesn't work, you'll need to share what code you are running and what happens when it stops running.
There must be, Set_time_limit - Sets the maximum execution time of a script.
bool set_time_limit ( int $seconds )
When set_time_limit() called. It returns the counter to zero. In other words, if the default limit is 30 seconds, and after 25 seconds of script execution the set_time_limit(20) call is made, then the script will run for a total of 45 seconds before finishing .
Please visit http://php.net/manual/fr/function.set-time-limit.php for more information.