PHP Get picture size (width, height)

This article mainly describes the PHP to get picture size (width, height) function, that is, the getimagesize () function.

Syntax: array getimagesize (string filename [, array &imageinfo])

Function: the getimagesize () function will determine any GIF,JPG,PNG,SWF,SWC,PSD,TIFF,BMP,IFF,JP2,JPX,JB2,JPC,XBM or wbmp image file and return the file size, size, The file type and a height/width text string that can be used in the tag in a normal HTML file. If the specified image cannot be accessed or is not a valid image, GetImageSize () returns false and generates a e_warning level error.

Note:

(1) This function does not need the GD Image Library support.

(2) The function can be used to obtain remote data in addition to the local picture or flash information.

Example:

<?php
list ($width, $height, $type, $attr) =getimagesize ("logo.gif");
echo "Image width". $width;
echo "<br/>";
echo "Image height". $height;
echo "<br/>";
echo "Image type". $type;
echo "<br/>";
echo "Attribute". $attr;

The output information is as follows:

Image width 200

Image Height 55

Image Type 1

Image attribute width= "height=" "55"

The parameters of the picture type are referenced as follows:

1 = GIF 5 = PSD 9 = JPC = SWC

2 = JPG 6 = BMP = JP2 = IFF

3 = PNG 7 = TIFF (Intel byte order) one = JPX = WBMP

4 = SWF 8 = TIFF (motorola byte order) = JB2 = XBM

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