getimagesize Get Picture Size Instance

In this paper, an example is given to describe the method of obtaining picture size by getimagesize. Share it for your reference. The details are as follows:

php has a ready-made function getimagesize to get the size of the image, code example:

<?php 

/* 1.jpg For the picture you want to get its size  */ 

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

/** 

 *  Here $arr For 1 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 output of the following two lines of code is 1 Like  */ 

echo "<img src="1.jpg" $arr[3] alt="" />"; 

echo "<img src="1.jpg" width="$arr[0]" height="$arr[1]" alt="" />"; 

?>

<img src="1.jpg" width="xxx" height="yyy" alt="" /> 

<img src="1.jpg" width="xxx" height="yyy" alt="" />

I hope this article is helpful to everyone's PHP programming.