php缩略图生成，内存不足解决思路
php缩略图生成，内存不足
用php生成缩略图，
操作300kb+的jpg图片都没问题，
但是操作220kb左右的png图片就显示
内存用尽，
Allowed memory size of 8388608 bytes exhausted (tried to allocate 3715200 bytes；
这个是什么原因造成的，
怎么会出现这种情况。
------解决方案--------------------
你分配了多大内存给php
1.优化内存
2.memory_limit设大些
------解决方案--------------------
试着在行首加上：ini_set("memory_limit","12M"); 看能不能解决。
如果不能解决则需要优化你的代码。
------解决方案--------------------
这样的修改，是在本页面结束就消失
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