01.<?php
02.
03.function croptofit($source_path, $desired_width, $desired_height){
04.
05.
06.
07.
08.
09.list( $source_width, $source_height, $source_type ) = getimagesize( $source_path );
10.
11.switch ( $source_type )
12.{
13.case IMAGETYPE_GIF:
14.$source_gdim = imagecreatefromgif( $source_path );
15.break;
16.
17.case IMAGETYPE_JPEG:
18.$source_gdim = imagecreatefromjpeg( $source_path );
19.break;
20.
21.case IMAGETYPE_PNG:
22.$source_gdim = imagecreatefrompng( $source_path );
23.break;
24.}
25.
26.$source_aspect_ratio = $source_width / $source_height;
27.$desired_aspect_ratio = $desired_width / $desired_height;
28.
29.if ( $source_aspect_ratio > $desired_aspect_ratio )
30.{
31.
32.
33.
34.$temp_height = $desired_height;
35.$temp_width = ( int ) ( $desired_height * $source_aspect_ratio );
36.}
37.else
38.{
39.
40.
41.
42.$temp_width = $desired_width;
43.$temp_height = ( int ) ( $desired_width / $source_aspect_ratio );
44.}
45.
46.
47.
48.
49.
50.$temp_gdim = imagecreatetruecolor( $temp_width, $temp_height );
51.imagecopyresampled(
52.$temp_gdim,
53.$source_gdim,
54.0, 0,
55.0, 0,
56.$temp_width, $temp_height,
57.$source_width, $source_height
58.);
59.
60.
61.
62.
63.
64.$x0 = ( $temp_width - $desired_width ) / 2;
65.$y0 = ( $temp_height - $desired_height ) / 2;
66.
67.$desired_gdim = imagecreatetruecolor( $desired_width, $desired_height );
68.imagecopy(
69.$desired_gdim,
70.$temp_gdim,
71.0, 0,
72.$x0, $y0,
73.$desired_width, $desired_height
74.);
75.
76.
77.
78.
79.
80.
81.
82.
83.header( 'Content-type: image/jpeg' );
84.imagejpeg( $desired_gdim );
85.
86.
87.
88.
89.}
90.
91.#using
92.croptofit('pic/Music_Dancesm.jpg', 100, 100);
93.?>
