Php find String in foreach

Question

How can I find an highlight a string in a foreach?

This loops through all users of my database and I want to find all lets say $um.

$um = "Um";
foreach($users as $user){
     # find here the string um or something
     echo $user;
}

How do I accomplish this?

take a look at [strpos](http://php.net/manual/en/function.strpos.php) and [str_replace](http://php.net/manual/en/function.str-replace.php). try to figure out how to use it by yourself. if you need more help let us know ;) — Tanuel Mategi, Oct 26 '15 at 08:24
Take a look at this [question](http://stackoverflow.com/questions/17422370/highlight-only-typed-keywords-from-string-in-php). — Thaillie, Oct 26 '15 at 08:24
Why not use the MySQL to do the check? `WHERE user LIKE '%um%'`? — Geoff Atkins, Oct 26 '15 at 08:24
Possible duplicate of [List of Big-O for PHP functions](http://stackoverflow.com/questions/2473989/list-of-big-o-for-php-functions) — l'L'l, Oct 26 '15 at 08:26

score 5 · Answer 1 · answered Oct 26 '15 at 08:24

5

In reality, I would do this in the query.. ..but

$um = "Um";

foreach($users as $user){

    if(strpos($user,$um) !== false){

        echo $user;

    }
}

strpos() returns a string position, so a return value of '0' would be a match at the beginning of the string. So, check for 'not false' http://php.net/manual/en/function.strpos.php

answered Oct 26 '15 at 08:24

MaggsWeb

3,018
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I recommend and to check the mb_strpos if the work involves different languages with special chars.. – Svetoslav Oct 26 '15 at 08:30
Why would it better to use this in the query? – Slark Oct 26 '15 at 08:33
Because it would necessitate the need for a loop, a test, and would only return the results that you want to display. – MaggsWeb Oct 26 '15 at 08:35

score 4 · Accepted Answer · answered Oct 26 '15 at 08:34

4

   $um  = "this is string contains um";

  $keyword[] = "um"; // the word/parts you wanna highlight

  $result = $um;

  foreach($keyword as $key)   {


    $result = str_replace($key, "<strong>$key</strong>", $result);
  }               


echo $result;

answered Oct 26 '15 at 08:34

monirz

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Good one. This is the direct answer. – Niranjan N Raju Oct 26 '15 at 08:46
This worked the only thing is that it does not style single characters just the full word – Slark Oct 26 '15 at 09:43

score 1 · Answer 3 · answered Oct 26 '15 at 08:25

1

You could use preg_match

$um = "Um";
foreach($users as $user){
     if( preg_match( "@$um@", $user, $matches ) ) echo $user;
}

answered Oct 26 '15 at 08:25

Professor Abronsius

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Php find String in foreach

3 Answers3