split string after x characters

Question

How to split $string after 5 characters into an array

example:

$string="123456789"; 

expected output

$output[0] contain "12345"; $output[1] contain "6789"; 

Answer 1

If you need to split a string after every 5 characters, try str_split():

$output = str_split($string, 5); 

If you only need to extract the first 5 characters and put the rest of the string in the second part of your array, you can use substr() as NullUserException suggests (code from his now-deleted answer):

$output[0] = substr($string, 0, 5); $output[1] = substr($string, 5); 

Answer 2

With the help of BoltClocks' answer I have created the following function to solve the problem:

function split_on($string, $num) {     $length = strlen($string);     $output[0] = substr($string, 0, $num);     $output[1] = substr($string, $num, $length );     return $output; }