PHP连接超时

I'm testing a complex project involving several php files linked with each other by CURL. I run the main function 15 times. It only runs 4 times and then complains Maximum execution time of 30 seconds exceeded. When I look at the database, I see that operations are executed exactly 4 times, every time I run it. What could it be? The error appears on the line where I'm calling some other php file $data = curl_exec($ch);

See php.ini max_execution_time setting and adjust. 120, 240 still makes sense and are ok, but do NOT feel tempted to set it to 0 to disable this limit. Instead fix your script to i.e. cache remote files and not fetch it all the time. In general I expect your design to be broken. Connecting scripts via cURL indicates that you either need API or there's some other design issue

Someone else already covered max execution time, so general thoughts:

• Make sure that you aren't needlessly looping things. If you are done with a loop, "break" it. Remember you can break multiple iterations too.
• I've not tried this (purely just thinking), but what about using Ajax calls at the end of the execution to start the next execution? I bet that starts the executing timer over because you're making a new request.

In the starting point of your php function set time limit for this function to execute. Set 0 for no limit.

function doWork() {
    set_time_limit(0);
    /* do your work here */
}

Time limit set in curl:

curl_setopt($ch, CURLOPT_TIMEOUT, 400);

If you need to request multiple pages, you can do it simultaneously (in parallel) with curl_multi_*