Php getting image size (width, height) _ PHP Tutorial

Php obtains the image size (width and height ). This article mainly describes the function of PHP to obtain the image size (width, height), that is, the getimagesize () function. Syntax: arraygetimagesize (stringfilename [, arrayimageinfo]) function: This article mainly describes the function of PHP to obtain the image size (width, height), 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, the size, size, file type, and a height/width text string that can be used in a common HTML file. If the specified image cannot be accessed or is not valid, getimagesize () returns FALSE and generates an E_WARNING error.

Note:

(1) This function is not supported by the GD Image Library.

(2) in addition to obtaining information about local images or Flash, this function can also be used directly to obtain remote information.

Example:

 ";echo "Image height ".$height;echo "
";echo "Image type ".$type;echo "
";echo "Attribute ".$attr;

The output information is as follows:

Image width 200
 
Image height 55
 
Image type 1
 
Image attribute width = "200" height = "55"

The parameters of the image type are as follows:
 
1 = GIF 5 = PSD 9 = JPC 13 = SWC
 
2 = JPG 6 = BMP 10 = JP2 14 = IFF
 
3 = PNG 7 = TIFF (intel byte order) 11 = JPX 15 = WBMP
 
4 = SWF 8 = TIFF (motorola byte order) 12 = JB2 16 = XBM

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The (width, height) function, that is, the getimagesize () function. Syntax: array getimagesize (string filename [, array imageinfo]) function :...