Getting zipcode from a string

I am trying to get zipcodes out of address strings.

Zipcodes may look like this: 23-123 or 50-530.

Strings usually look like this: Street 50, 50-123 City

What I tried to do is finding the position of the zipcode and cut the next 6 characters starting from that point. Unfortunatelly strpos returns false all the time.

$zipCodePosition = strpos($form->address, "d{2}-d{3}");
$zipCode = $zipCodePosition ? substr($form->address, $zipCodePosition , 6) : '';

Answer

The strpos does not allow the use of regex as an argument.

You need a preg_match / preg_match_all here:

// Get the first match
if (preg_match('~bd{2}-d{3}b~', $text, $match)) {
   echo $match[0];
}

// Get all matches
if (preg_match_all('~bd{2}-d{3}b~', $text, $matches)) {
   print_r($matches[0]);
}

The regex matches

• b – a word boundary
• d{2} – two digits
• - – a hyphen
• d{3} – three digits
• b – a word boundary

See the regex demo.