Split 4 digit numbers - php

Question

I want to split a 4 digit number with 4 digit decimal .
Inputs:
Input 1 : 5546.263
Input 2 : 03739.712 /*(some time may have one zero at first)*/
Result: (array)
Result of input 1 : 0 => 55 , 1 => 46.263
Result of input 2 : 0 => 37 , 1 => 39.712
P.S : Inputs is GPS data and always have 4 digit as number / 3 digit as decimal and some time have zero at first .

Answer 1

You could use the following function:
function splitNum($num) {
$num = ltrim($num, '0');
$part1 = substr($num, 0, 2);
$part2 = substr($num, 2);
return array($part1, $part2);
}
Test case 1:
print_r( splitNum('5546.263') );
Output:
Array
(
[0] => 55
[1] => 46.263
)
Test case 2:
print_r( splitNum('03739.712') );
Output:
Array
(
[0] => 37
[1] => 39.712
)
Demo!

Answer 2

^0*([0-9]{2})([0-9\.]+) should work just fine and do what you want:
$input = '03739.712';
if (preg_match('/^0*([0-9]{2})([0-9\.]+)/', $input, $matches)) {
$result = array((int)$matches[1], (float)$matches[2]);
}
var_dump($result); //array(2) { [0]=> int(37) [1]=> float(39.712) }
Regex autopsy:
^ - the string MUST start here
0* - the character '0' repeated 0 or more times
([0-9]{2}) - a capturing group matching a digit between 0 and 9 repeated exactly 2 times
([0-9\.]+) - a capturing group matching a digit between 0 and 9 OR a period repeated 1 or more times
Optionally you can add $ to the end to specify that "the string MUST end here"
Note: Since we cast to an int in the first match, you can omit the 0* part, but if you plan NOT to cast it, then leave it in.