PHP obtains the image width, height, size, size, and image type.

Phpself-contained getimagesize()$img_infogetimagesize('test.jpg '); echo' & lt; pre & gt; '; print_r ($ img_info); echo' & lt;/pre & gt; '; output: Array; (& nbsp ;[

Php built-in function getimagesize ()

$ Img_info = getimagesize('test.jpg '); echo'
'; Print_r ($ img_info); echo'
';

Output:

Array? (??[0] => 170?[1] => 254?[2] => 2?[3] = & gt; width = "170" height = "254 "?[Bits] => 8?[Channels] => 3?[Mime] => image/jpeg)

The first index value indicates the width, the second index value indicates the height, and the third index value indicates the image type (1 is gif, 2 is jpg/jpeg, 3 is png, and so on, the value of channels is 3 for RGB images, 4 for CMYK images, bits is the digits of each color, and mime represents the MIME type of the image.

Note: This function does not require the GD Image Library.