Question

如何限制图片大小我在哪里插入代码？我可以设法上传图片，但它只能上传和显示4张图片。我能做些什么来解决它？

Answer 1

使用PHP上传文件时，上传时可用的信息在数组中：$ _FILES ['image']（图像是表单中输入文件的名称）。此数组包含一些有用的信息:(复制自：http://php.net/manual/en/reserved.variables.files.php）

            [name] => MyFile.txt (comes from the browser, so treat as tainted)
        [type] => text/plain  (not sure where it gets this from - assume the browser, so treat as tainted)
        [tmp_name] => /tmp/php/php1h4j1o (could be anywhere on your system, depending on your config settings, but the user has no control, so this isn't tainted)
        [error] => UPLOAD_ERR_OK  (= 0)
        [size] => 123   (the size in bytes)

[size]会以字节为单位给出filesize。如果你想根据它的尺寸处理上传，你必须先完成上传，然后使用PHP函数检查尺寸：getimagesize

如何限制PHP的图片上传大小

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