Picture clipping + thumbnail processing program

The processing method is:
1. When the original image of the width or height of any smaller than the specified size, only to carry out, such as abbreviated processing,
2. When the original image of the width and height are larger than the specified size, the first to be compared to the abbreviated processing, and then calculate the center position for cutting

<?php
/*
* $o _photo Original path
* $d _photo image path after processing
* $width definition width
* $height High Definition
* Call Method Cutphoto ("Test.jpg", "temp.jpg", 256,146);
*/

function Cutphoto ($o _photo, $d _photo, $width, $height) {

$temp _img = imagecreatefromjpeg ($o _photo);
$o _width = imagesx ($temp _img); Get the original image wide
$o _height = Imagesy ($temp _img); Get high

Judgment Processing method
if ($width > $o _width | | $height > $o _height) {//Huantuquan or higher than the specified size, compress

$newwidth = $o _width;
$newheight = $o _height;

if ($o _width> $width) {
$newwidth = $width;
$newheight = $o _height* $width/$o _width;
}

if ($newheight > $height) {
$newwidth = $newwidth * $height/$newheight;
$newheight = $height;
}

Thumbnail pictures
$new _img = Imagecreatetruecolor ($newwidth, $newheight);
Imagecopyresampled ($new _img, $temp _img, 0, 0, 0, 0, $newwidth, $newheight, $o _width, $o _height);
Imagejpeg ($new _img, $d _photo);
Imagedestroy ($new _img);


}else{//Huantuquan and height are larger than the specified size, after compression cut

if ($o _height* $width/$o _width> $height) {//Make sure the width is the same as the rule, if the height is larger than the specified, OK
$newwidth = $width;
$newheight = $o _height* $width/$o _width;
$x = 0;
$y = ($newheight-$height)/2;
}else{//Otherwise determine the height is the same as the specified, Width adaptive
$newwidth = $o _width* $height/$o _height;
$newheight = $height;
$x = ($newwidth-$width)/2;
$y = 0;
}

Thumbnail pictures
$new _img = Imagecreatetruecolor ($newwidth, $newheight);
Imagecopyresampled ($new _img, $temp _img, 0, 0, 0, 0, $newwidth, $newheight, $o _width, $o _height);
Imagejpeg ($new _img, $d _photo);
Imagedestroy ($new _img);

$temp _img = imagecreatefromjpeg ($d _photo);
$o _width = imagesx ($temp _img); Get thumbnail width
$o _height = Imagesy ($temp _img); Get thumbnail height

Crop a picture
$new _IMGX = Imagecreatetruecolor ($width, $height);
Imagecopyresampled ($new _imgx, $temp _img,0,0, $x, $y, $width, $height, $width, $height);
Imagejpeg ($new _imgx, $d _photo);
Imagedestroy ($new _IMGX);
}

}
?>