<?php echo subHtml("<div><table>x<tr>1s<td>测你<input name='11'/>你好我也好我们是非常也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一也好我们是非常好的非常这好似一好的非常这好似一个这是一个故事的故事试<td>124",30);/** * 取HTML,并自动补全闭合 * * param $html * * param $length * * param $end */ function subHtml($html, $length=50) { $result = ''; $tagStack = array(); $len = 0; $contents = preg_split("~(<[^>]+?>)~si", $html, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); foreach($contents as $tag) { if (trim($tag) == "") continue; if (preg_match("~<([a-z0-9]+)[^/>]*?/>~si", $tag)) { $result .= $tag; } else if (preg_match("~</([a-z0-9]+)[^/>]*?>~si", $tag, $match)) { if ($tagStack[count($tagStack)-1] == $match[1]) { array_pop($tagStack); $result .= $tag; } } else if (preg_match("~<([a-z0-9]+)[^/>]*?>~si", $tag, $match)) { array_push($tagStack, $match[1]); $result .= $tag; } else if (preg_match("~<!--.*?-->~si", $tag)) { $result .= $tag; } else { if ($len + mstrlen($tag) < $length) { $result .= $tag; $len += mstrlen($tag); } else { $str = msubstr($tag, 0, $length - $len + 1); $result .= $str; break; } } } while (!empty($tagStack)) { $result .= '</' . array_pop($tagStack) . '>'; } return $result; } /** * 取中文字符串 * * param $string 字符串 * * param $start 起始位 * * param $length 长度 * * param $charset 编码 * * param $dot 附加字串 */ function msubstr($string, $start, $length, $dot = '', $charset = 'UTF-8') { $string = str_replace(array('&', '"', '<', '>', ' '), array('&', '"', '<', '>', ' '), $string); if (strlen($string) <= $length) { return $string; } if (strtolower($charset) == 'utf-8') { $n = $tn = $noc = 0; while ($n < strlen($string)) { $t = ord($string[$n]); if ($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) { $tn = 1; $n++; } elseif (194 <= $t && $t <= 223) { $tn = 2; $n += 2; } elseif (224 <= $t && $t <= 239) { $tn = 3; $n += 3; } elseif (240 <= $t && $t <= 247) { $tn = 4; $n += 4; } elseif (248 <= $t && $t <= 251) { $tn = 5; $n += 5; } elseif ($t == 252 || $t == 253) { $tn = 6; $n += 6; } else { $n++; } $noc++; if ($noc >= $length) { break; } } if ($noc > $length) { $n -= $tn; } $strcut = substr($string, 0, $n); } else { for($i = 0; $i < $length; $i++) { $strcut .= ord($string[$i]) > 127 ? $string[$i] . $string[++$i] : $string[$i]; } } return $strcut . $dot; } /** * 得字符串的长度，包括中英文。 */ function mstrlen($str, $charset = 'UTF-8') { if (function_exists('mb_substr')) { $length = mb_strlen($str, $charset); } elseif (function_exists('iconv_substr')) { $length = iconv_strlen($str, $charset); } else { preg_match_all("/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-f][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/", $text, $ar); $length = count($ar[0]); } return $length; } ?>
很赞哦 ()
