Split number string and get required numbers

Hi,

I try your solution and it gives me result but it remove message.

Do you have any idea about how to cut number from message.

I want to cut 123456789 to 1234 and keep rest of message as it is.

<?php

function countDigits($str)
{
    	$NumberArray = array();
		$noDigits=0;
		for ($i=0;$i<strlen($message);$i++) {
				
			if (is_numeric($message($i))) {
				$noDigits++;
				array_push($NumberArray,$message($i));
			}
			//return $noDigits;
		}
		echo"<pre>";
		print_r($NumberArray);
		echo"</pre>";
}

function sanitize_message($message,$email = true, $numbers = true, $url = true )
{
		//$message = strip_tags( $message );
		if($email)
		{
			//strip email address
			$email_regexp = "[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9-]+(\\.[A-Za-z0-9-]+)*(\\.[A-Za-z]{2,3})";
			$message = ereg_replace($email_regexp, '', $message);
		}
		
		if($numbers)
		{
			/*
			if (preg_match("/[0-9]{4}/", $message, $matches)) // find only numbers and collect the first group of 4 numbers
			{
				var_dump($matches); // if a match of 4 numbers is found, dump the matches array so you can see you can access it using $matches[0]
			}
			
			echo"<pre>";
			print_r($matches);
			echo"</pre>";
			
			echo"<br>".$matches[0];
			*/
			//echo count($numbers);	
			//strip all numerical values
			$number_regexp = "[0-9]";
			$message = ereg_replace($number_regexp,'',$message);
		}
		
		//eliminate url from message
		if($url)
		{
			$url_regexp = "(https?://)?(www\\.)?([a-zA-z0-9\\.])*[a-zA-Z0-9]*\\.[a-z]{2,3}";
			$message = ereg_replace($url_regexp, '', $message);
		}
		
		//eliminate all the bad words
		$bad_words = array("f**k", "son of a b***h");
		$message = str_ireplace($bad_words, '', $message);
		
		//eliminate all the email words
		$email_words = array("skype", ".net", ".com", "org", "biz", "@", "yahoo.com", "gmail", "hotmail", "mail", "e-mail", "msn", "dot","net","com",".org",
							 ".org",".facebook","facebook","Gmail.com","Ymail.com", "Hotmail.com", "AOL.com ","Easy.com","Sky.com",
							 "AEmail4u.com", "Caramail", "Care2.com",
							 "Catholic Online", "CentralPets", "Computermail", "DC Email", "Ecology Fund", "E-Mail Anywhere", "EasyPeasy", "Eboxmail.net",
							 "EmailAccount", "EmailAccounts4Free", "EmailChoice", "Emailyou", "EmailX.net", "Eudora Web Mail","Everyone.net","Execs2K",
							 "FastMail", "FasterMail", "FirstName.com","FlashMail","Fresno Mail","Garfield","Gawab","Glay.org", "GMail", "GMX", "Go.com",
							 "Go2Now", "GotGeekMail", "Graffiti.net", "Hello Kitty","HushMail","InBox.com", "JoinMe","JoyMail","JungleMate","Killer",
							 "KittyMail",
							 "KuKaMail","Lycos.com", "Mail.com", "Mail2World", "MailCity", "Maktoob","MeowMail", "MyOwnEmail", "MyPersonalEmail", "MyPlace",
							 "MyRealBox", "MyWay","Netscape Mail","NoPeddlers.com","NZ11.com", "OperaMail","OutGun","ParsMail","Rediff Mail", "SiteWarp",
							 "Snowboard","Surfy.net","SwissMail","UltimateEmail", "Unlimited Mail","Yahoo",".net"," at "," co "," com "," net ",
							 " org "," biz "," gmail "," yahoo "," hotmail "," mail "," e-mail "," msn "," dot "," ymail "," hotmail.com "," Easy "," Sky "
							 ," AEmail4u "," Caramail "," FirstName "," FlashMail "," Rediff "," Everyone "," JoinMe "," JoyMail "," JungleMate
							 "," Go "," Killer
							 "," KuKaMail "," NoPeddlers "," aol "," Care2 " ," Eboxmail "," InBox "," Maktoob "," skype "," com "," aol "," aol
							 "," facebook "," HushMail
							 "," webmail ",".webmail","webmail"
							 ," yahoo "," Maktoob "," www  " ,"www"," aol "," aol "," aol "," aol "," aol "," aol "," aol "," aol "," aol "," aol "," aol
							 "," aol "," aol "," aol ");
		$message = str_ireplace($email_words, ' ', $message);
	
		//echo"<br>Count Numbers=>".$numberCount = countDigits($message)."<br/>";
		//echo"<br>Count Numbers=>".$numberCount2 = countDigits2($message)."<br/>";
		//print count(array_filter(str_split($message),'is_numeric'));
		
		return $message;
}

$MyMessage="
<p>
Hi User,
</p>

<p>
Mobile number => 123456789
</p>

<p>
Mobile number => 987654321
</p>

<p>
-Thanks
</p>
";

echo"<br>".$MyMessage."<br>";
echo"<br>------------------------------------------<br>";
echo"<br>".$Test2 = sanitize_message($MyMessage)."<br>";
echo"<br>".$Test3 = countDigits($MyMessage)."<br>";


?>

Any Idea?

-Thanks