Paste_Image.png

getimagesize() 得到图片的信息

//$filename='images/ipad.jpg';
//$filename='images/iphone.jpg';
$filename = 'images/miao.gif';
//getimagesize()得到图片的信息
$fileInfo = getimagesize($filename);
var_dump($fileInfo);

Paste_Image.png

list(var1,var2...)

把数组中的值赋给一些变量

imagecopyresampled

<?php
//$filename='images/ipad.jpg';
$filename = 'images/iphone.jpg';
//$filename = 'images/miao.gif';
$fileInfo = getimagesize($filename);
//把数组中的值赋给一些变量
list($src_w, $src_h) = $fileInfo;

//imagecopyresampled
//创建100X100
$dst_w = 100;
$dst_h = 100;

$dst_image = imagecreatetruecolor($dst_w, $dst_h);

$src_image = imagecreatefromjpeg($filename);
imagecopyresampled($dst_image, $src_image, 0, 0, 0, 0, $dst_w, $dst_h, $src_w, $src_h);
imagejpeg($dst_image, 'images/thumb_100x100.jpg');
imagedestroy($src_image);
imagedestroy($dst_image);

?>

Paste_Image.png