PHP achieves image zoom effect

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Release： 2016-07-25 08:54:44

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/**
* Images class Image processing class
* @author pan
* @package application.controllers
* @since 1.0
*/
class Images
{
/**
* Zoom image
* @param $source original image
* @param $newfile new image
* @param $pre zoom ratio
*/
public function thumn($source,$pre,$newfile )
{
//Get the image size
list($s_w,$s_h)=getimagesize($source);
//Generate a new image size
$new_w=$s_w*$pre;
$new_h=$s_h* $pre;
//Create a new image
$new_f=imagecreatetruecolor($new_w, $new_h);
//Create an image with a resource image
$sour_f=imagecreatefromjpeg($source);
//Copy the resource image to a new image
imagecopyresampled($new_f, $sour_f, 0, 0, 0, 0, $new_w, $new_h, $s_w, $s_h);
//Output the image to the browser
imagejpeg( $new_f,$newfile);
imagedestroy($new_f);
imagedestroy($sour_f);
}
}
?>

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The above is a simple code to implement image scaling in PHP for the reference of beginners.

Related labels：

php实现图片缩放效果

source：php.cn

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