Why php function may not load some images completely?

Question

PHP

Good afternoon!
There is a script that parses images and copysaves them on my server with a simple function. And everything would be fine, but for some reason, about 1 image out of 5-9 will not be completely saved. Those. kind of something like this:

What could be the problem?

Answer 1

check upload_max_filesize. In general, you need all the code for parsing and rendering pictures to find an error