PHP thumbnail implementation function code_PHP tutorial

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);
?>

http://www.bkjia.com/PHPjc/323653.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/323653.htmlTechArticlearray getimagesize ( string $filename [, array lt;?php /* Created by A href="http:/ /www.cnphp.info"http://www.cnphp.info/A */ // File and zoom size //$imgfile = 'smp.jpg'; //$per...