PHP

KISS Stuff for MySQL

SI suffix for numbers.

function si($v) {
 $six=array('K','M','G','T','P','E','Are you nuts?');
 $sis='';
 while ($v>800) {
  $v=$v/1024.0;
  $sis=array_shift($six);
 }
 return (round($v*10)/10.0).$sis;
}
It's a nice and quick function to take those ridiculous large numbers and slab k/m/g afterward.

Escape, if necessary, with quotes for MySQL.

function mesc($s) {
    if (is_numeric($s)) return $s;
    return "'".mysql_escape_string($s)."'";
}

Can't remember how many time's I wrote that code..

 HSV Processing, good for picture twisting & captcha

class ColorMangler {
    // HSV Values:Number 0-1
    // RGB Results:Number 0-255
    var $authorative="rgb";
    var $r,$g,$b,$h,$s,$v;

    function toHSV ()    {

        $var_R = ($this->r / 255);
        $var_G = ($this->g / 255);
        $var_B = ($this->b / 255);

        $var_Min = min($var_R, $var_G, $var_B);
        $var_Max = max($var_R, $var_G, $var_B);
        $del_Max = $var_Max - $var_Min;

        $V = $var_Max;

        if ($del_Max == 0)
        {
            $H = 0;
            $S = 0;
        }
        else
        {
            $S = $del_Max / $var_Max;

            $del_R = ( ( ( $max - $var_R ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max;
            $del_G = ( ( ( $max - $var_G ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max;
            $del_B = ( ( ( $max - $var_B ) / 6 ) + ( $del_Max / 2 ) ) / $del_Max;

            if      ($var_R == $var_Max) $H = $del_B - $del_G;
            else if ($var_G == $var_Max) $H = ( 1 / 3 ) + $del_R - $del_B;
            else if ($var_B == $var_Max) $H = ( 2 / 3 ) + $del_G - $del_R;

            if (H<0) $H++;
            if (H>1) $H--;
        }

        $this->h = $H;
        $this->s = $S;
        $this->v = $V;

    }

    function toRGB ()      {
        $H=$this->h;
        $S=$this->s;
        $V=$this->v;

        if($S == 0)
        {
            $R = $G = $B = $V * 255;
        }
        else
        {
            $var_H = $H * 6;
            $var_i = floor( $var_H );
            $var_1 = $V * ( 1 - $S );
            $var_2 = $V * ( 1 - $S * ( $var_H - $var_i ) );
            $var_3 = $V * ( 1 - $S * (1 - ( $var_H - $var_i ) ) );

            if       ($var_i == 0) { $var_R = $V     ; $var_G = $var_3  ; $var_B = $var_1 ; }
            else if  ($var_i == 1) { $var_R = $var_2 ; $var_G = $V      ; $var_B = $var_1 ; }
            else if  ($var_i == 2) { $var_R = $var_1 ; $var_G = $V      ; $var_B = $var_3 ; }
            else if  ($var_i == 3) { $var_R = $var_1 ; $var_G = $var_2  ; $var_B = $V     ; }
            else if  ($var_i == 4) { $var_R = $var_3 ; $var_G = $var_1  ; $var_B = $V     ; }
            else                   { $var_R = $V     ; $var_G = $var_1  ; $var_B = $var_2 ; }

            $R = $var_R * 255;
            $G = $var_G * 255;
            $B = $var_B * 255;
        }

        $this->r = $R;
        $this->g = $G;
        $this->b = $B;

    }

}