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phpsplit

Split a number by decimal point in php

How do I split a number by the decimal point in php?

I've got $num = 15/4; which turns $num into 3.75. I would like to split out the 3 and the 75 parts, so $int = 3 and $dec = 75. My non-working code is:

$num = 15/4; // or $num = 3.75;
list($int, $dec) = split('.', $num);

but that results in empty $int and $dec.

Thanks in advance.

Solution

  • If you explode the decimal representation of the number, you lose precision. If you don't mind, so be it (that's ok for textual representation). Take the locale into account! We Belgians use a comma (at least the non-programming ones :).

    If you do mind (for computations e.g.), you can use the floor function:

    $num = 15/4
if ($num > 0) {
    $intpart = floor( $num );    // results in 3
    $fraction = $num - $intpart; // results in 0.75
} else {
    $intpart = ceil( $num );     // results in -3
    $fraction = $num - $intpart; // results in -0.75
}