This function calculates and returns the bounding box in pixels
for a TrueType text.
text
The string to be measured.
size
The font size in pixels.
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.
angle
Angle in degrees in which text will be
measured.
imagettfbbox() 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.
This function requires both the GD library and the FreeType
library.
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Php imagettfbbox syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.
