//单词不能被拆分//内容里出现多个相同的, 只搜最前一个//省略部分用...表示//可以模糊查询//关键字可以是多个单词
麻烦大家帮我看下代码有没有问题(漏掉某种情况没考虑, 代码可以怎么优化下,以及其它问题)
function getspcontent($content, $keyword){ $keyword = trim($keyword); $content = trim(strip_tags($content)); $keyword2 = explode( , $keyword); $content2 = explode( , $content); $start_pos = x; if(count($keyword2) > 1){ foreach ($content2 as $k => $v) { preg_match(/{$keyword2[0]}/, $v, $matches); if (!empty($matches)) { foreach($keyword2 as $x=>$y){ preg_match(/{$keyword2[$x]}/, $content2[$k+$x], $matches); if (!empty($matches) && $x == count($keyword2)-1) { $start_pos = $k; break; }elseif(!empty($matches)){ continue; }else{ break; } } } if($start_pos != x){ break; } } }else{ foreach ($content2 as $k => $v) { preg_match(/{$keyword}/, $v, $matches); if (!empty($matches)) { $start_pos = $k; break; } } } $max = 50; $len = count($content2) - 1; $content3 = ; if ($len < $max) { return $content; } else { if ($start_pos == x) { for ($i = 0; $i < $max; $i++) { $content3 = $content3 . . $content2[$i]; } return ltrim($content3) . ...; } elseif ($start_pos <= $max / 2) { for ($i = 0; $i = $len) { for ($i = ($start_pos - $max / 2); $i <= $len; $i++) { $content3 = $content3 . . $content2[$i]; } return ... . ltrim($content3); } else { for ($i = $start_pos - $max / 2; $i < $start_pos + $max / 2; $i++) { $content3 = $content3 . . $content2[$i]; } return ... . ltrim($content3) . ...; } }}
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