1 | <?php |
---|
2 | /** |
---|
3 | * Image.inc.php |
---|
4 | * code by strangecode :: www.strangecode.com :: this document contains copyrighted information |
---|
5 | * |
---|
6 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
7 | * @version 1.1 |
---|
8 | * @since 14 Apr 2006 20:07:29 |
---|
9 | */ |
---|
10 | class Image { |
---|
11 | |
---|
12 | // Object parameters. |
---|
13 | var $_params = array(); |
---|
14 | |
---|
15 | /** |
---|
16 | * Constructor. |
---|
17 | * |
---|
18 | * @param array $params Set parameters for this object. |
---|
19 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
20 | * @version 1.1 |
---|
21 | * @since 26 Jan 2005 01:54:50 |
---|
22 | */ |
---|
23 | function Image($params=array()) |
---|
24 | { |
---|
25 | if (!is_array($params)) { |
---|
26 | trigger_error(sprintf('Parameters not specified properly.', null), E_USER_ERROR); |
---|
27 | } |
---|
28 | $defaults = array( |
---|
29 | // Pattern passed to glob() with $id to match image filenames. |
---|
30 | 'filename_pattern' => '%s*', |
---|
31 | |
---|
32 | // The path to the image source directory. (Ex: /var/www/htdocs/images) |
---|
33 | 'base_path' => '', |
---|
34 | |
---|
35 | // The URL to the image directory. (Ex: /images) |
---|
36 | 'base_url' => '', |
---|
37 | |
---|
38 | // Image to use in the case of a missing image. |
---|
39 | 'default_image_file' => '', |
---|
40 | ); |
---|
41 | $this->_params = array_merge($defaults, $params); |
---|
42 | } |
---|
43 | |
---|
44 | /** |
---|
45 | * Tests if an image with specified id exists on the file system. |
---|
46 | * |
---|
47 | * @access public |
---|
48 | * @param string $id Unique image identifier. |
---|
49 | * @return bool Existence of file. |
---|
50 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
51 | * @version 1.0 |
---|
52 | * @since 26 Jan 2005 01:54:50 |
---|
53 | */ |
---|
54 | function exists($id) |
---|
55 | { |
---|
56 | $src = $this->oSrc($id); |
---|
57 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
58 | // Use exif_imagetype to check not only file existence but that of a valid image. |
---|
59 | return false != @exif_imagetype($filepath); |
---|
60 | } |
---|
61 | |
---|
62 | /** |
---|
63 | * Returns the value from getimagesize(). |
---|
64 | * |
---|
65 | * @access public |
---|
66 | * @param string $id Unique image identifier. |
---|
67 | * @param int $key Which element from the array returned by getimagesize: |
---|
68 | * - Index 0 contains the width of the image in pixels. |
---|
69 | * - Index 1 contains the height. |
---|
70 | * - Index 2 is the type of the image. |
---|
71 | * - Index 3 is height="yyy" width="xxx" string. |
---|
72 | * @return mixed return value of getimagesize. |
---|
73 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
74 | * @version 1.0 |
---|
75 | * @since 26 Jan 2005 01:54:50 |
---|
76 | */ |
---|
77 | function size($id, $key) |
---|
78 | { |
---|
79 | $src = $this->oSrc($id); |
---|
80 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
81 | $img_size = @getimagesize($filepath); |
---|
82 | return isset($img_size[$key]) ? $img_size[$key] : false; |
---|
83 | } |
---|
84 | |
---|
85 | /** |
---|
86 | * Returns the URL to the source of image specified by id. |
---|
87 | * |
---|
88 | * @access public |
---|
89 | * @param string $id Unique image identifier. |
---|
90 | * @return string Absolute URL of image. |
---|
91 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
92 | * @version 1.1 |
---|
93 | * @since 26 Jan 2005 01:56:35 |
---|
94 | */ |
---|
95 | function oSrc($id) |
---|
96 | { |
---|
97 | $file_name = ''; |
---|
98 | // filename_pattern is a sprintf argument with %s replaced with the image id. |
---|
99 | if ($file_match = glob(sprintf("%s/{$this->_params['filename_pattern']}", $this->_params['base_path'], $id))) { |
---|
100 | $file_name = basename(end($file_match)); |
---|
101 | } else if ('' != $this->_params['default_image_file']) { |
---|
102 | $file_name = $this->_params['default_image_file']; |
---|
103 | } |
---|
104 | return sprintf('%s/%s', $this->_params['base_url'], $file_name); |
---|
105 | } |
---|
106 | |
---|
107 | /** |
---|
108 | * Returns an HTML <img> tag with the src set to an image specified by id. |
---|
109 | * Automatically prints image width and height. |
---|
110 | * |
---|
111 | * @access public |
---|
112 | * @param string $id Unique image identifier. |
---|
113 | * @param string $alt Text for image alt attribute. |
---|
114 | * @param string $extra Additional tag attributes. |
---|
115 | * @return HTML image tag. |
---|
116 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
117 | * @version 1.0 |
---|
118 | * @since 26 Jan 2005 01:57:33 |
---|
119 | */ |
---|
120 | function oImg($id, $alt='', $extra='') |
---|
121 | { |
---|
122 | $src = $this->oSrc($id); |
---|
123 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
124 | |
---|
125 | if (false === ($gis = @getimagesize($filepath)) || preg_match('/width|height/', $extra)) { |
---|
126 | $image_size = ''; |
---|
127 | } else { |
---|
128 | $image_size = $gis[3]; |
---|
129 | } |
---|
130 | |
---|
131 | return sprintf('<img src="%s" %s alt="%s" %s />', |
---|
132 | $src, |
---|
133 | $image_size, |
---|
134 | oTxt($alt), |
---|
135 | $extra |
---|
136 | ); |
---|
137 | } |
---|
138 | } // End class |
---|
139 | |
---|
140 | ?> |
---|