Using sprintf() to ensure that one digit hex numbers (like 0) get padded with a leading 0. : sprintf « String « PHP

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PHP » String » sprintf

Using sprintf() to ensure that one digit hex numbers (like 0) get padded with a leading 0.


 

function build_color($red, $green, $blue) {

    $redhex   = dechex($red);

    $greenhex = dechex($green);

    $bluehex  = dechex($blue);

    return sprintf('#%02s%02s%02s', $redhex, $greenhex, $bluehex);

}

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