function CreateThumb($file, $maxwdt, $maxhgt, $dest, $quality = 1)
{
if (!file_exists($file)) {
return FALSE;
}
if (setmemoryforimage($file) === FALSE) {
return FALSE;
}
list($owdt, $ohgt, $otype) = getimagesize($file);
if ($owdt < $maxwdt) {
$maxwdt = $owdt;
}
if ($ohgt < $maxhgt) {
$maxhgt = $ohgt;
}
if ($owdt <= $maxwdt && $ohgt <= $maxhgt) {
@copy($file, $dest);
chmod($dest, 420);
return TRUE;
}
switch ($otype) {
case 1:
$newimg = imagecreatefromgif($file);
break;
case 2:
$newimg = imagecreatefromjpeg($file);
break;
case 3:
$newimg = imagecreatefrompng($file);
break;
case 6:
case 15:
$newimg = @imagecreatefromwbmp($file);
break;
return FALSE;
}
if (!$newimg) {
return FALSE;
}
if (1500 < $owdt || 1200 < $ohgt) {
list($owdt, $ohgt) = resample($newimg, $owdt, $ohgt, 1024, 768, 0);
}
resample($newimg, $owdt, $ohgt, $maxwdt, $maxhgt, $quality);
if (!$dest) {
return $newimg;
}
if (!is_dir(dirname($dest))) {
mkdir(dirname($dest));
}
switch ($otype) {
case 1:
imagegif($newimg, $dest);
break;
case 2:
imagejpeg($newimg, $dest, 90);
break;
case 3:
imagepng($newimg, $dest);
break;
case 6:
case 15:
@imagewbmp($newimg, $dest);
}
imagedestroy($newimg);
chmod($dest, 420);
return TRUE;
}
<?php
// header("Content-type: image/jpeg");
for ($i=0; $i <count(scandir('./'))-6 ; $i++) {
// echo scandir('./')[$i+3];
echo 'begin';
resample(scandir('./')[$i+3],'./resize/'.$i.'.jpeg');
echo 'end';
// sleep(200000);
}
//重新裁图http://php.net/manual/zh/function.imagecopyresampled.php
function resample($filename,$filerename){
/* 读取图档 */
$im = imagecreatefrompng($filename);
/* 图片要截多少, 长/宽 */
$start_width=mt_rand(300,360);
$start_length=mt_rand(300,400);
$new_img_width = mt_rand(250,350);
$new_img_height = mt_rand(400,800);
/* 先建立一个 新的空白图档 */
$newim = imagecreate($new_img_width, $new_img_height);
// 输出图要从哪边开始 x, y ，原始图要从哪边开始 x, y ，要画多大 x, y(resize) , 要抓多大 x, y
$re=imagecopyresampled($newim, $im, 0, 0,$start_width , $start_length, $new_img_width, $new_img_height, $new_img_width, $new_img_height);
/* 放大成 500 x 500 的图 */
// imagecopyresampled($newim, $im, 0, 0, 100, 30, 500, 500, $new_img_width, $new_img_height);
/* 将图印出来 */
imagejpeg($newim,$filerename);
