Summary of php array lookup function

This article summarizes the php array lookup function with examples. Share it for your reference. The details are as follows:

Here, we provide three methods to judge whether a string includes the words we defined, which is more suitable for keyword filtering at addresses such as messages and comments. The example code is as follows:

$crud = array(' China ||| China ||| Earth ', 'kelon|||lerke|||sb', 'sesscxx'); 

$crud = join('|',$crud); 

$crud = str_replace('|||', '|', $crud); 

$pat  = "/({$crud})/i"; 

$txt = ' I know China you are sdfex Who! ! '; 

preg_match/*_all*/($pat, $txt, $matches); 

var_dump($matches);

Method 2, the code is as follows:

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(' China ||| China ||| Earth ', 'kelon|||lerke|||ssxb', 'aaa'); 

$test1 = ' I'm Chinese . There are many people in our country . The earth is full of people .-__-!! Good xx Sentence-making of .'; 

 

var_dump(checkcrud($test1, $crud));

Method 3, the code is as follows:

function lktest($v,$keyword){ 

foreach ($v as $k){ 

if (strpos($k,"|||")!==false){ 

    $kelon=explode("|||",$k); 

    // Find the maximum value of array  

    $b=count($kelon); 

    foreach($kelon as $t){ 

        //echo $t.'<br>'; 

        if (preg_match('/'.$t.'/i',$keyword)){  

            //echo " Sensitive keyword "; 

            $a=$a+1;            

        } 

    else{     

    $a=''; 

    } 

             

    } 

    // If the maximum value of the array is similar to that of the $a Is equal, all ||| The keywords all appeared  

    if ($a==$b){ 

        echo " Sensitive keyword ";     

        } 

   } 

elseif(preg_match('/'.$k.'/i',$keyword)){ 

echo " Sensitive keyword "; 

    }  

} 

}

I hope this article is helpful to everyone's PHP programming.