What is memory_limit generally set?

What is memory_limit generally set? In php. ini, how many memory_limit settings are suitable?

Reply to discussion (solution)

Memory_limit is only an upper limit and does not necessarily mean it will be used.
If you often encounter problems with insufficient memory, increase the memory size.

Generally, the default value is 16 MB.

If you need to perform too many memory operations. You can use ini_set ('memory _ limit ', '256m'); to set the maximum allowed values.

Thank you! I have never attended any forums for a long time. I started learning PHP on the first day of today. I will give you more advice later.