getimagesize gets image size php function

php has a ready-made function getimagesize for getting the size of the image. The specific function usage and code examples:

/* 1.jpg is the picture whose size you want to get */

$arr = getimagesize("1.jpg");

/**

* Here $arr is an array type

* $arr[0] is the width of the image

* $arr[1] is the height of the image

* $arr[2] is the format of the image, including jpg, gif and png, etc.

* $arr[3] is the width and height of the image, and the content is width="xxx" height="yyy"

*/

/* The following two lines of code output the same content */

echo "";

echo "";

?>//Open source software: phpfensi.com