PHP getimagesize function Get picture width height _php tutorial

If you want to use PHP to get the height and width of the image we can directly use the PHP getimagesize function to operate, let me give you a detailed introduction to the GetImageSize function use method.

The getimagesize () function will determine any GIF,JPG,PNG,SWF,SWC,PSD,TIFF,BMP,IFF,JP2,JPX,JB2,JPC,XBM or WBMP The size of the image file and returns the size of the image as well as the file type and a height/width text string that can be used in an IMG tag in an ordinary HTML file.

The code is as follows

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$arr = getimagesize ("http://www.php100.com/html/php/hanshu/2013/0905/1.jpg"); /** * Here $arr for an array type * $arr [0] is the width of the image * $arr [1] is the height of the image * $arr [2] format for images, including JPG, GIF, PNG, etc. * $arr [3] is the width and height of the image, the content is width= "xxx" height= "yyy" */ /* The following two lines of code output the same content */ echo ""; echo ""; ?>

The above PHP code is interpreted as content:

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Cases

Example #1 getimagesize (file)

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

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