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Home/ Questions/Q 7640351
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Editorial Team
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Editorial Team
Asked: May 31, 20262026-05-31T08:38:57+00:00 2026-05-31T08:38:57+00:00

(Update) Problem was due to my php version not being the minimum version specified

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(Update)
Problem was due to my php version not being the minimum version specified in the docs.


The situation:
Getting a fatal error on a native php function. (Using php version 5.2.17) Any obvious reasons why?

Error Output:
PHP Fatal error: Call to undefined function gc_collect_cycles() in /home/oursite/public_html/pdfgenerator/memory.php on line 4

Script Contents:

// memory.php
<?php

gc_collect_cycles();

?>
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  1. Editorial Team
    Editorial Team
    2026-05-31T08:38:59+00:00Added an answer on May 31, 2026 at 8:38 am

    gc_collect_cycles() is in PHP starting with version 5.3.0, so at 5.2.17 you won’t be able to use it.

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