Online PHP editor | output for uHMG0

@ 2014-07-22T14:31:37Z

<?php

$test = ['07511 111111', '+447511 111111', '+44 (0) 7511 111111', '07211 111111', '3749853857', '0712121211233', 'abcd', '0746877774'];

foreach ($test as $input) {

//step 1 - reduce it to digits:
preg_match_all('([\+]{0,1}[^\(\) ][0-9]+)', $input, $digits);
$digits = implode($digits[0]);

//now for step 2.. start by removing +44 and replacing it with 0
if (substr($digits, 0, 3) == '+44') 
{
    $digits = str_replace('+44', '0', $digits);
}

//by this point we should have just a UK-style number, but we must validate it:
if ((substr($digits, 2, 1) > 3) && strlen($digits) == 11)
{
    //valid UK mobile number!
    echo "\nValid UK mobile number $digits";
}
}

Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Valid UK mobile number 07511111111 Valid UK mobile number 07511111111 Valid UK mobile number 07511111111
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/uHMG0 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5: Parse error: parse error, unexpected '[' in /in/uHMG0 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/uHMG0 on line 3
Process exited with code 255.

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