font string width from height

[rosegarden]

I have a script that creates a PNG on the fly. The TEXT, FONT, COLOR, SIZE (print out size in inches) are all dynamically supplied from a form.

I need to know how to calculate the width of a string of text.

ie... "TTTT" is wider than "iiii" :::: How do I calculate the different widths in this example?

In the command

 $image = imagecreate($width, $height);

I need height and width. If the $height was constant what will be the width of the text string?

I need this to figure in pixels for the online application of this program and how to figure out the width in inches when used in a printing application offline. All derived from a variable text string.

I hope that this is clearer than MUD....

😕

[a4arpan]

i think this example will help you

<?php
header ("Content-type: image/png");
$string = "iiii";

$font = 4;
$width = ImageFontWidth($font) * strlen($string);
$height = ImageFontHeight($font);

$im = @imagecreate ($width,$height);
$background_color = imagecolorallocate ($im, 255, 255, 255); //white background
$text_color = imagecolorallocate ($im, 0, 0,0);//black text
imagestring ($im, $font, 0, 0, $string, $text_color);
imagepng ($im);
?>