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