Extract mail address in pointy brackets ("<", ">") from given string

mails.php

<?php

/**
*
* Extract mail address in pointy brackets ("<", ">") from given string
*
* @author: Ondřej Profant <ondrej.profant <> gmail.com>, 2013
*
*/

function extractMail($text) 
{
	/**
 	 * Regexp pattern definition
	 */
	static $split = '/[\<\>]/';
	static $mail = '/^[a-zA-Z0-9._-]+@[a-zA-Z0-9-]+\.[a-zA-Z.]{2,5}$/';

	$unique = array();
	//$all = array();	

	// Split in the array by pointy brackets
	$arr = preg_split($split, $text, -1, PREG_SPLIT_NO_EMPTY);
	
	// Cyklus by parts of one global input string
	foreach($arr as $a) {
		// If match this is requested mail address
		if( preg_match($mail, $a) ) {
			//$unique[$a] = $a;

			$all[] = $a;

			// Print all matched values
			//echo( "\t" . $a . "\n" );
		}
	}
	
	if( empty( $all ) ) {
		return false;
	}
	return $all;
}

/**
 * Testing data
 */
$data = array (
	"lorem ipsum",
	"lorem @ ipsum",
	"<lorem @ ipsum>",
	"lorem@ ipsum",
	"<lorem@ ipsum>",
	"lorem @ipsum",
	"<lorem @ipsum>",
	"lorem@ipsum",
	"<lorem@ipsum>",
	"<mail@domain.com>",
	"<mail@domain.com> <mail2@domain.com>",
	"<mail@domain.com> lorem ipsum\n
	lorem ipsum",
	"lorem ipsum\n
	lorem ipsum <mail@domain.com>",
	"lorem ipsum <mail@domain.com> lorem ipsum",
	"<mail@domain.com> <any bordel> <think> <tag attr=\"@\">",
	"lorem mail@domain.cz lorem"
);


/**
 * Regexp pattern definition
 */
$split = '/[\<\>]/';
$mail = '/[a-zA-Z0-9._-]+@[a-zA-Z0-9-]+\.[a-zA-Z.]{2,5}/';


$unique = array();

/**
 * Testing data cyklus
 */
foreach($data as $d) {
	print_r(extractMail($d));
}