Calculating SVG bounding box using PHP with respect to curves -

i found amazing class located here, , tried using it.

however, works of basic functions such move, horizontal line, , vertical line.

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i have tried extending existing class adding additional checks (and changing regex).

public static function frompath($pathstring) {     preg_match_all('/([mlvhzc][^mlvhzc]*)/i', $pathstring, $commands);     $pt = array(0, 0);     $bounds = new self();     foreach ($commands[0] $command) {         preg_match_all('/((\+|-)?\d+(\.\d+)?(e(\+|-)?\d+)?)/i', $command, $matches);         $i = 0;         while ($i < count($matches[1])) {             switch ($command[0]) {                 case 'm' :                 case 'l' :                     $pt[0] += $matches[1][$i++];                     $pt[1] += $matches[1][$i++];                     break;                 case 'm' :                 case 'l' :                     $pt[0] = $matches[1][$i++];                     $pt[1] = $matches[1][$i++];                     $last=$pt;                     break;                 case 'v' :                     $pt[1] += $matches[1][$i++];                     break;                 case 'v' :                     $pt[1] = $matches[1][$i++];                     $last[1]=$pt[1];                     break;                 case 'h' :                     $pt[0] += $matches[1][$i++];                     break;                 case 'h' :                     $pt[0] = $matches[1][$i++];                     $last[0]=$pt[0];                     break;                 case 'z' :                 case 'z' :                     break;                 case 'c':                     $pt[0] = $last[0]+$matches[1][4];                     $pt[1] = $last[1]+$matches[1][5];                     $last=$pt;                     $i=count($matches[1]);                     break;                 default :                     throw new runtimeexception("unhandled path command: " . $command[0]);             }             $bounds->extend($pt[0], $pt[1]);         }      }     return $bounds; } 

i checked out svg manual , found out 'c' has 6 parameters, knowing last 2 curve end at, tried extend points based on that...

for moment, tests based around this:

<svg xmlns="http://www.w3.org/2000/svg" width="109" height="109" viewbox="0 0 109 109"> <g style="fill:none;stroke:#000000;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;">     <path d="m32.25,41c1.25,0.62,3.12,0.67,5.5,0.5c7.12-0.5,19.12-2.5,24-3c0.99-0.1,2.62-0.25,3.75,0" />             </g> 

when run in browser, chrome reports it's width height ratio (because know svg doesn't have sizes), around 5 6, however, when find ratio script, it's off.

i'd know if there's svg class built supports functions (c,c,q,q,etc).

i know there's way box converting image, feel inefficient, there's getbbox in javascript, i'd perform calculations on server.

thanks reading!

here example using imagick, 2 example in 1 since cannot run @ same time, uncomment 1 @ time:

$svg = '<?xml version="1.0" encoding="utf-8" standalone="no"?> <svg xmlns="http://www.w3.org/2000/svg" width="109" height="109" viewbox="0 0 109 109"> <g style="fill:none;stroke:#000000;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;">     <path d="m32.25,41c1.25,0.62,3.12,0.67,5.5,0.5c7.12-0.5,19.12-2.5,24-3c0.99-0.1,2.62-0.25,3.75,0" />             </g> </svg>';  $im = new imagick(); $im->readimageblob($svg); $im->trimimage (0);//this trims unecessary blank space.  //this block gets dimensions (comment block before uncommenting second example bellow) $dimension = $im->getimagegeometry(); print_r('<pre>'); print_r($dimension); die();   /*//uncomment block view thw jpeg version of svg $im->setimageformat("jpeg"); header("content-type: image/jpeg"); $thumbnail = $im->getimageblob(); echo $thumbnail; $im->clear(); $im->destroy(); //*/