If you want to format a number with leading or trailing zeroes, you can use this method :
1. Use the printf( ) or sprintf( ) function
//Source : http://stackoverflow.com/a/6457950
$number = 9;
$paddedNum = sprintf("%04d", $number);
echo $paddedNum; // prints 0009
2. Use the str_pad() function
//Source : http://stackoverflow.com/a/6457981 //$number = 9; echo str_pad($number, 4, '0', STR_PAD_LEFT); // output: 0009
OR
//Source : http://www.php.net/manual/en/function.str-pad.php#86404
function number_pad($number,$n) {
return str_pad((int) $number,$n,"0",STR_PAD_LEFT);
}
echo number_pad($number,4);
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