javascript - Does the use of AJAX increase memory usage of PHP? - Stack Overflow

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I think the answer to this question is no but I do not have anymore leads of the problem I am trying to figure out.

I initially had a single script that did some database queries via SQLCMD. I have now decided to initiate this script via AJAX and wait for the response. But I get a fatal error of:

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 445 bytes) in C:\process_txt.php on line 109

The only new thing that I have changed in my script is this ajax request and nothing else to be honest which is why I have asked this question.

I use JQuery AJAX request and I don't think I am using polling. Here is an example AJAX GET request that I make use of:

function process_txt(checkbox){

            waiting = 1;

            var folder_path = $('#folder_path').val();

            var file_name = $('#'+ checkbox + '_val').val();

            $.get("process_txt.php", { path:  folder_path, file: file_name},

            function(data){

                           alert(data);             

            });

}

Thanks to anyone that can try to shed some light on this matter and not the problem I am having, just this question! :)

I think the answer to this question is no but I do not have anymore leads of the problem I am trying to figure out.

I initially had a single script that did some database queries via SQLCMD. I have now decided to initiate this script via AJAX and wait for the response. But I get a fatal error of:

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 445 bytes) in C:\process_txt.php on line 109

The only new thing that I have changed in my script is this ajax request and nothing else to be honest which is why I have asked this question.

I use JQuery AJAX request and I don't think I am using polling. Here is an example AJAX GET request that I make use of:

function process_txt(checkbox){

            waiting = 1;

            var folder_path = $('#folder_path').val();

            var file_name = $('#'+ checkbox + '_val').val();

            $.get("process_txt.php", { path:  folder_path, file: file_name},

            function(data){

                           alert(data);             

            });

}

Thanks to anyone that can try to shed some light on this matter and not the problem I am having, just this question! :)

• php
• javascript
• jquery
• ajax
• sqlcmd

Share Improve this question Follow asked Jan 29, 2010 at 14:12 AbsAbs 58k103103 gold badges282282 silver badges417417 bronze badges 3

• No, your error es from PHP. Ajax makes a normal HTTP request. Post your PHP code. ;) – Pik' Commented Jan 29, 2010 at 14:17
• I will start a new question for this, I think I have identified the problem but don't know how too rewrite the code. – Abs Commented Jan 29, 2010 at 14:22
• Check your PHP code. Maybe you include some libs that help you generate responce for ajax/http request? – NilColor Commented Jan 29, 2010 at 14:24

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3 Answers 3

Sorted by: Reset to default 12

AJAX vs a regular call will make no difference to the server. As far as PHP is concerned, nothing will have changed - the request is just a request, regardless of how it was initiated from the client.

I'd look for the source of your memory leak elsewhere - perhaps the processor can get in an infinite loop if certain parameters are specified?

In the context of PHP memory: Using AJAX is the same as not using AJAX, but as a result of using AJAX you can output less data back to the user in the HTTP response, which makes PHP to use less memory.

No. The requests from JS and browser's address bar are the same. Oh wait, JSON/XML is less bytes than HTML! So it's better.

Look at your PHP code - maybe there's some bugs in database queries.

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