Warning: preg_replace() expects at least 3 parameters

Posted: Tue Nov 08, 2022 4:38 am

Warning: implode(): Invalid arguments passed in
Warning: preg_replace() expects at least 3 parameters

When I try to edit in admin I get this error.

Code:

   foreach($ShoutArray as $ShoutPart) {


      if (preg_replace("mailto:", $ShoutPart)) { // find mailto:


         $ShoutPart = str_replace("mailto:", "",$ShoutPart); // strip out mailto:


         $ShoutPart = str_replace("%", " ",$ShoutPart);


         $ShoutPart = trim($ShoutPart);


         // decode address to ascii


         $c = 0;


         $AddyArray = explode(" ",$ShoutPart);


         foreach($AddyArray as $AddyPart) {


            $AddyNew[$c] = chr(hexdec($AddyPart));


            $c++;


         }


         $ShoutPart = implode("",$AddyNew);


         $ShoutNew[$i] = "mailto:$ShoutPart"; // add mailto: back in


      } else { $ShoutNew[$i] = $ShoutPart; }


      $i++;


   }


   $ShoutComment = implode(" ", $ShoutNew);

I've never got this error. Any help will be great. Thanks in advance.

Site Admin Joined: Aug 22, 2007 Posts: 1774

Quote:

Warning: implode(): Invalid arguments passed in

This means, the passed variable in the affected implode function-call is not an array. You have two implodes there. One with $ShoutNew and the other one with $AddyNew. If $ShoutNew and $AddyNew are not already set before the foreach()-loop, you can try to add it before like this to avoid the warning:

php Code:

$AddyNew = array();


$ShoutNew = array();


foreach($ShoutArray as $ShoutPart) {

And the preg_replace function-call can you try to change to preg_match like this:

php Code:

if (preg_match('/mailto:/', $ShoutPart)) { // find mailto:

Posted: Thu Nov 10, 2022 7:23 pm

Thanks neralex,

What is the function from preg_replace in this case? I can not believe replacing it with preg_match solved the error.

These 2 lines were missing over there. U were right.

Code:

$AddyNew = array();


$ShoutNew = array();

Posted: Thu Nov 10, 2022 11:27 pm

preg_replace searches subject for matches to pattern and replaces them with replacement. [ Only registered users can see links on this board! Get registered or login! ] But in your case, the script searches only a subject for matches to pattern. There is nothing to replace. preg_math is created exactly for this purpose. [ Only registered users can see links on this board! Get registered or login! ] Therefore, preg_replace is used inconveniently at this point.