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Editorial Team
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Asked: 2026-05-24T05:53:56+00:00

I’m using a php script to create image thumbnails and this error is thrown

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I’m using a php script to create image thumbnails and this error is thrown while creating some thumbs:

Fatal error: Allowed memory size of 31457280 bytes exhausted (tried to
allocate 227 bytes)

this is what top shows: 

top - 07:43:49 up 44 days, 22:21,  1 user,  load average: 0.00, 0.00, 0.00
Tasks: 171 total,   1 running, 170 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.2%sy,  0.0%ni, 99.7%id,  0.2%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   6097648k total,  3459060k used,  2638588k free,   566924k buffers
Swap:  4194296k total,        0k used,  4194296k free,  1991920k cached

I haven’t looked at optimizing phpthumb code. But is there any other way to free the already used memory? May be a cron job can be used to free this memory on regular intervals?

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1 Answer

  1. Editorial Team

    Your image is probably larger than ~10-15MB. PHP has a limit on the amount of memory it can take up per script (memory_limit in php.ini)

    What happens is that you load an image in memory (And then resize it, creating a second image)…

    Change the memory limit if you’re allowed, or don’t load such large image …
    AFAIK there is no stream image reader …

    If you can’t change the memory limit, a workaround might be calling the commandline ImageMagick or GraphicsMagick tools if they’re installed …

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