Help needed on modifying string

[Parash]

I have a string like this

xbox 360 video locks after 2 minutes xbox 360 video locks after 2 minutes

I want to put comma after every two words like this.

xbox 360, video locks, after 2, minutes xbox, 360 video, locks after, 2 minutes

PLEASE HELP!!!

Thanks
-PARASH

[Salathe]

You could use a regular expression to look for two words and add a comma after each group of two words.

$subject = 'xbox 360 video locks after 2 minutes xbox 360 video locks after 2 minutes';
$separated = preg_replace('/\w++\s++\w++(?!$)/', '$0,', $subject);

echo $separated; 

[AnthonySterling]

I'm sure the expression could be tweaked, and preg_split would probably be better suited but this works...

<?php
preg_match_all('~([a-z0-9]+\s?){2}\s?~i', 'xbox 360 video locks after 2 minutes xbox 360 video locks after 2 minutes', $aMatches);
echo implode(', ', array_shift($aMatches)); #xbox 360 , video locks , after 2 , minutes xbox , 360 video , locks after , 2 minutes
?>

Edit: Bugger, Salathe beat me to it. Damn my poor RegExp skills.

[Salathe]

Off Topic:

Edit: Bugger, Salathe beat me to it. Damn my poor RegExp skills.

Always good to see different approaches to problems.

[fristi]

Off Topic:


Always good to see different approaches to problems.

An other solution, but without RegEx.
I doubted about posting it since you already answered. But since it is ok to have multiple solutions:

$str = 'xbox 360 video locks after 2 minutes xbox 360 video locks after 2 minutes';
$newStr = (string) '';
$words = explode(' ', $str);

foreach ($words as $key => $word) {
    $newStr .= ($key != 0 && $key % 2 == 0) ? ', ' : ' ';
    $newStr .= $word;
}

echo $newStr; 

[Parash]

Thanks Guys.!!!