Home > Article > Backend Development > PHP thumbnail implementation function code_PHP tutorial
PHP thumbnail implementation function code_PHP tutorial
- WBOYOriginal
- 2016-07-21 15:28:06841browse
array getimagesize ( string $filename [, array &$imageinfo ] ) Get the image size
resource imagecreatetruecolor ( int $x_size , int $y_size ) Create a new true color image
resource imagecreatefromjpeg ( string $filename ) From a JPEG file or URL Create a new image
bool imagecopyresized ( resource $dst_image , resource $src_image , int $dst_x , int $dst_y , int $src_x , int $src_y , int $dst_w , int $dst_h , int $src_w , int $src_h ) Copy part of the image and resize
bool imagejpeg ( resource $image [, string $filename [, int $quality ]] ) Output the image to a browser or file in JPEG format
Copy code The code is as follows:
/*
Created by http://www.cnphp.info
*/
// File and zoom size
//$imgfile = 'smp.jpg';
//$ percent = 0.2;
header('Content-type: image/jpeg');
list($width, $height) = getimagesize($imgfile);
$newwidth = $width * $percent;
$newheight = $height * $percent;
$thumb = ImageCreateTrueColor($newwidth,$newheight);
$source = imagecreatefromjpeg($imgfile);
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
imagejpeg($thumb);
?>
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：PHP study notes Application of [interface] and [polymorphism] in object-oriented _PHP tutorialNext article：PHP study notes Application of [interface] and [polymorphism] in object-oriented _PHP tutorial