$crud = array('中国|||我国|||大地', 'kelon|||lerke|||sb', 'sesscxx'); $crud = join('|',$crud); $crud = str_replace('|||', '|', $crud); $pat  = "/({$crud})/i"; $txt = '我知道中国你是sdfex谁！！'; preg_match/*_all*/($pat, $txt, $matches); var_dump($matches);

function checkcrud($str, $crud) {     if(is_array($crud) && !emptyempty($crud))     {         foreach($crud as $value)         {             if(strpos($value, '|||') !== false)             {                 $cruds = explode('|||', $value);                 $num = count($cruds);                 $check = 0;                 foreach($cruds as $val)                 {                     if(strpos($str, $val) !== false)                     {                         $check++;                     }                 }                 if($check == $num)                 {                     return true;                 }             }             else             {                 if(strpos($str, $value) !== false)                 {                     return true;                 }             }         }         return false;     } } $crud = array('中国|||我国|||大地', 'kelon|||lerke|||ssxb', 'aaa'); $test1 = '我是中国人.我国人很多.大地上全是人.-__-!!好xx的造句.';   var_dump(checkcrud($test1, $crud));

function lktest($v,$keyword){ foreach ($v as $k){ if (strpos($k,"|||")!==false){     $kelon=explode("|||",$k);     //求数组最大值     $b=count($kelon);     foreach($kelon as $t){         //echo $t.'<br>';         if (preg_match('/'.$t.'/i',$keyword)){              //echo "敏感关键字";             $a=$a+1;                    }     else{         $a='';     }                  }     //如果数组最大值跟$a相等时，则所有|||关键字都出现了     if ($a==$b){         echo "敏感关键字";             }    } elseif(preg_match('/'.$k.'/i',$keyword)){ echo "敏感关键字";     }  } }