GD bounding box incorrect for text (php) -

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i'm having issues text lining should. every tutorial can find tells me use imagettfbox find dimensions of text. this, text doesn't fit within dimensions.

see example below:

<?php // create image , colours $im = imagecreatetruecolor(200, 100); $white = imagecolorallocate($im, 255, 255, 255); $black = imagecolorallocate($im, 0, 0, 0); $red = imagecolorallocate($im, 255, 0, 0);  //set background white imagefilledrectangle($im, 0, 0, 200, 100, $white);  //font file $font = "arial.ttf";  //set sample text , fontsize $text="102"; $size = 25;  //calculate height , width of text1 $bbox = imagettfbbox($size, 0, $font, $text); $width = $bbox[2] - $bbox[0]; $height = $bbox[5] - $bbox[3];  //draw rectangle should house text imagefilledrectangle($im, 50, 40, 50+$width, 40+$height, $red); //draw text @ same startpoint rectangle imagettftext($im, $size, 0, 50, 40, $black, $font, $text);  // output browser header('content-type: image/png');  imagepng($im); imagedestroy($im); ?>

this should output red rectangle, containing text. doesn't - text right of should be. happens strings - ones contain "1" tend not work, while others work perfectly. here output 2 strings:

output

does know happening, , need make text fit correctly within bounding box? i've tested multiple fonts, including monospace fonts - same thing happens.


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