php正則替換處理HTML頁面的方法

 　　本文實例講述了php正則替換處理HTML頁面的方法。分享給大家供大家參考。具體如下：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 <?php if(!defined('BASEPATH')) exit('No direct script access allowed'); /** * HTML替換處理類，考慮如下幾種替換 * 1. img src : '/<img(.+?)src=(['" ])?(.+?)([ >]+?)/i' * 2. a href : '/<a(.+?)href=(['" ])?(.+?)([ >]+?)/i' * 3. ifram.src : '/<iframe(.+?)src=(['" ])?(.+?)([ >]+?)/i' * 4. frame src : '/<frame(.+?)src=(['" ])?(.+?)([ >]+?)/i' * 5. js : '/window.open([( ]+?)(['" ]+?)(.+?)([ )+?])/i' * 6. css : '/background(.+?)url([( ])(['" ]+?)(.+?)([ )+?])/i' */ class Myreplace { private $moudle_array = array('udata','tdata','tresult','dresult'); private $content; private $relative_dirname; private $projectid; private $moudle; function __construct() { $this->CI = &get_instance (); } /** * 替換 * @param string $content HTML內容 * @param string $relative 相對路徑 * @param int $projectid 項目id * @moudle string $moudle 模板標識: udata,tdata,tresult,dresult */ public function my_replace($content,$relative,$projectid,$moudle) { $this->content = $content; $this->relative_dirname = $relative; $this->projectid = $projectid; if(in_array(strtolower($moudle),$this->moudle_array)) $this->moudle = $moudle; else exit; switch($this->moudle) { case 'udata': $this->CI->load->model('mupload_data','model'); break; case 'tdata': $this->CI->load->model('taskdata','model'); break; case 'tresult': $this->CI->load->model('taskresult','model'); break; case 'dresult': $this->CI->load->model('dmsresult','model'); break; default: break; } $pattern = '/<img(.+?)src=(['" ])?(.+?)([ >]+?)/i'; $content = preg_replace_callback( $pattern, array($this, 'image_replace') , $content ); $pattern = '/<a(.+?)href=(['" ])?(.+?)([ >]+?)/i'; $content = preg_replace_callback( $pattern, array($this, 'html_replace') , $content ); $pattern = '/<iframe(.+?)src=(['" ])?(.+?)([ >]+?)/i'; $content = preg_replace_callback( $pattern, array($this, 'iframe_replace') , $content ); $pattern = '/<frame(.+?)src=(['" ])?(.+?)([ >]+?)/i'; $content = preg_replace_callback( $pattern, array($this, 'frame_replace'), $content ); $pattern = '/window.open([( ]+?)(['" ]+?)(.+?)([ )]+?)/i'; $content = preg_replace_callback( $pattern, array($this, 'js_replace'), $content ); $pattern = '/background(.+?)url([( ])(['" ]+?)(.+?)([ )+?])/i'; $content = preg_replace_callback( $pattern, array($this, 'css_replace'), $content); return $content; } private function image_replace($matches) { if(count($matches) < 4) return ''; if( empty($matches[3]) ) return ''; $matches[3] = rtrim($matches[3],''"/'); //獲取圖片的id $parent_dir_num = substr_count( $matches[3], '../'); $relative_dirname = $this->relative_dirname; for($i=0; $i<$parent_dir_num; $i++) { $relative_dirname = substr( $relative_dirname, 0, strrpos($relative_dirname,"/") ); } $relativepath = rtrim($relative_dirname,'/') . '/'.ltrim($matches[3],'./'); $image_id = $this->CI->model->get_id_by_path_and_project($relativepath,$