Php/docs/function.imageftbbox

• PHP Manual
• GD and Image Functions
• Give the bounding box of a text using fonts via freetype2

imageftbbox

(PHP 4 >= 4.0.7, PHP 5, PHP 7)

imageftbbox — Give the bounding box of a text using fonts via freetype2

Description

imageftbbox ( float $size , float $angle , string $fontfile , string $text [, array $extrainfo ] ) : array

This function calculates and returns the bounding box in pixels for a FreeType text.

Note:

imageftbbox() is an extended variant of imagettfbbox() which additionally supports the extrainfo.

Parameters

size

The font size in points.

angle

Angle in degrees in which text will be measured.

fontfile

The name of the TrueType font file (can be a URL). Depending on which version of the GD library that PHP is using, it may attempt to search for files that do not begin with a leading '/' by appending '.ttf' to the filename and searching along a library-defined font path.

text

The string to be measured.

extrainfo

{| |+ Possible array indexes for extrainfo ! Key ! Type ! Meaning |- | linespacing | float | Defines drawing linespacing |}

Return Values

imageftbbox() returns an array with 8 elements representing four points making the bounding box of the text:

0	lower left corner, X position
1	lower left corner, Y position
2	lower right corner, X position
3	lower right corner, Y position
4	upper right corner, X position
5	upper right corner, Y position
6	upper left corner, X position
7	upper left corner, Y position

The points are relative to the text regardless of the angle, so "upper left" means in the top left-hand corner seeing the text horizontally.

Examples

Example #1 imageftbbox() example

<?php// Create a 300x150 image$im = imagecreatetruecolor(300, 150);$black = imagecolorallocate($im, 0, 0, 0);$white = imagecolorallocate($im, 255, 255, 255);// Set the background to be whiteimagefilledrectangle($im, 0, 0, 299, 299, $white);// Path to our font file$font = './arial.ttf';// First we create our bounding box$bbox = imageftbbox(10, 0, $font, 'The PHP Documentation Group');// This is our cordinates for X and Y$x = $bbox[0] + (imagesx($im) / 2) - ($bbox[4] / 2) - 5;$y = $bbox[1] + (imagesy($im) / 2) - ($bbox[5] / 2) - 5;imagefttext($im, 10, 0, $x, $y, $black, $font, 'The PHP Documentation Group');// Output to browserheader('Content-Type: image/png');imagepng($im);imagedestroy($im);?>

Notes

Note:

This function is only available if

PHP is compiled with freetype support (--with-freetype-dir=DIR)

See Also

• imagefttext() - Write text to the image using fonts using FreeType 2
• imagettfbbox() - Give the bounding box of a text using TrueType fonts