php - Using preg_match many time to check if strings are in text -

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i have text text area, contains 4 necessary strings. before insert text on database check presence of strings.

is there better , alternative way 4 preg_match operations, maybe using preg_match_all?

if i'd replace 4 strings else, difference between preg_replace , str_replace. should use?

here code:

if(isset($_post['text'])){     $text= $link->real_escape_string($_post['text']);      $string = $text;     $pattern1 = '/limite_type/';     $pattern2 = '/limite_set/';     $pattern3 = '/today_price/';     $pattern4 = '/auto_sign/';      if(preg_match($pattern1, $string)        && preg_match($pattern2, $string)        && preg_match($pattern3, $string)        && preg_match($pattern4, $string))     {         echo 'ok';     }else{         echo 'not found';     }      die(); }

if want check presence of exact words, don't need use regex, use strpos instead faster:

$word1 = 'limite_type'; $word2 = 'limite_set'; $word3 = 'today_price'; $word4 = 'auto_sign';  if  ( (strpos($string, $word1)     && strpos($string, $word2)     && strpos($string, $word3)     && strpos($string, $word4))!==false) {

but if need patterns (with regex features inside):

$patterns = array('~\blimite_type\b~',                   '~\blimite_set\b~',                   '~\btoday_price\b~',                   '~\bauto_sign\b~');  $found = true; foreach($pattern $pattern) {     if (!preg_match($pattern, $string)) {         $found = false;         break;     } } echo ($found)? 'ok' : 'not found';

the advantage of these codes tests stop @ first false result.


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