Introduction to PHP's function of obtaining picture width and height information

In PHP, there is a function can get the width and higher information of the picture, it is getimagesize () function, this article for everyone to make a brief introduction, and a small example, for everyone to learn the reference. getimagesize () function array getimagesize (string $filename [, Array & $imageinfo]) Returns an array with four cells. Index 0 contains the pixel value of the image width, and index 1 contains the pixel value of the image height. Index 2 is a marker of the image type: 1 = gif,2 = jpg,3 = png,4 = swf,5 = psd,6 = bmp,7 = TIFF (Intel byte order), 8 = TIFF (Motorola byte order), 9 = jpc,10 = jp2,11 = jpx,12 = jb2,13 = swc,14 = iff,15 = wbmp,16 = XBM. These tags correspond to the newly added IMAGETYPE constants of PHP 4.3.0. Index 3 is a text string with the content "height=" yyy "width=" xxx ", which can be used directly with the IMG tag. Example: ';}? >

