# What does this code do? [closed]

Can somebody please explain this code for me in simple steps?

$text = 'we need to send products ACE66765, ACE33453, and ace72345 back to the customer.';$regex = '/ACE\d{4}/i';

$productNumbers = getPartsWithRegex($text, $regex); foreach($productNumbers as $productNumber){ echo$productNumber . '<br/>';
}

function getPartsWithRegex($text,$regex){

preg_match_all($regex,$text, $array); return$array[0];

}

-
See the FAQ, asking for code explanation is off-topic here. –  Winston Ewert Feb 9 '13 at 22:04

## closed as off topic by palacsint, Peter Kiss, Quentin Pradet, Winston EwertFeb 9 '13 at 22:04

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$text = 'we need to send products ACE66765, ACE33453, and ace72345 back to the customer.';  Set the variable$text to the string.

$regex = '/ACE\d{4}/i';  Defines the Rex-Ex(http://en.wikipedia.org/wiki/Regular_expression) searchpattern to look for words starting with ACE and having a min. of 4 numbers $productNumbers = getPartsWithRegex($text,$regex);


Sets the variable $productNumbers as an array to the returned value of the function getPartsWithRegex. The arguments of the function are the previous two variables defined.$text and $regex. foreach($productNumbers as $productNumber){ echo$productNumber . '<br/>';
}


Loops through the array $productNumbers - as$productNumber. $productnumber is the value of the field. Each time printing the$productNumber followed by
- HTML newline.

function getPartsWithRegex($text,$regex) {
preg_match_all($regex,$text, $array); return$array[0];
}


Defines the function called earlier, to call preg_match_all. Defines a table with all found matches. (Third argument $array). - thank u very much , now i get them all, i am confused with the last part which is return$array[0] in the function getPartsWithRegex() , –  Abdul Raziq Feb 10 '13 at 9:23
Look up preg_match_all on php.net. It returns a multidimensional array. –  Frederik Spang Feb 15 '13 at 11:09