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php getimagesize函数获取图片宽高

Jun 13, 2016 am 11:15 AM
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如果你想使用php获取图片的高与宽我们可以直接利用php中的getimagesize函数来操作,下面我来给大家详细介绍getimagesize函数使用方法。  

getimagesize() 函数将测定任何 GIF,JPG,PNG,SWF,SWC,PSD,TIFF,BMP,IFF,JP2,JPX,JB2,JPC,XBM 或 WBMP 图像文件的大小并返回图像的尺寸以及文件类型和一个可以用于普通 HTML 文件中 IMG 标记中的 height/width 文本字符串。

 代码如下 复制代码

$arr = getimagesize("http://www.php100.com/html/php/hanshu/2013/0905/1.jpg");

/**
 * 这里$arr为一个数组类型
 * $arr[0] 为图像的宽度
 * $arr[1] 为图像的高度
 * $arr[2] 为图像的格式,包括jpg、gif和png等
 * $arr[3] 为图像的宽度和高度,内容为 width="xxx" height="yyy"
 */

/* 以下两行代码输出的内容都是一样的 */
echo "";
echo "";
?>

以上php代码被解释为内容为:

 代码如下 复制代码



Example #1 getimagesize(文件)

 代码如下 复制代码

list($width, $height, $type, $attr) = getimagesize("http://www.php100.com/html/php/hanshu/2013/0905/img/flag.jpg");
echo "";
?>


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