摘要： 1. 获取图片宽高<?php$img = 'http://www.baidu.com/img/baidu.gif';$a = getimagesize($img);var_dump($a);/**output:array(7) { [0]=> int(174) [1]=> int(59) [2]=> int(1) [3]=> string(23) "width="174" height="59"" ["bits"]=> int(5) ["channels 阅读全文