(PHP 4 >= 4.3.0, PHP 5)
gd_info — Retrieve information about the currently installed GD library
Gets information about the version and capabilities of the installed GD library.
Returns an associative array.
| Attribute | Meaning | 
|---|---|
| GD Version | string value describing the installed libgd version. | 
| Freetype Support | boolean value. TRUE if Freetype Support is installed. | 
| Freetype Linkage | string value describing the way in which Freetype was linked. Expected values are: 'with freetype', 'with TTF library', and 'with unknown library'. This element will only be defined if Freetype Support evaluated to TRUE. | 
| T1Lib Support | boolean value. TRUE if T1Lib support is included. | 
| GIF Read Support | boolean value. TRUE if support for reading GIF images is included. | 
| GIF Create Support | boolean value. TRUE if support for creating GIF images is included. | 
| JPG Support | boolean value. TRUE if JPG support is included. | 
| PNG Support | boolean value. TRUE if PNG support is included. | 
| WBMP Support | boolean value. TRUE if WBMP support is included. | 
| XBM Support | boolean value. TRUE if XBM support is included. | 
Example #1 Using gd_info()
<?php
var_dump(gd_info());
?>
The above example will output something similar to:
array(9) {
  ["GD Version"]=>
  string(24) "bundled (2.0 compatible)"
  ["FreeType Support"]=>
  bool(false)
  ["T1Lib Support"]=>
  bool(false)
  ["GIF Read Support"]=>
  bool(true)
  ["GIF Create Support"]=>
  bool(false)
  ["JPG Support"]=>
  bool(false)
  ["PNG Support"]=>
  bool(true)
  ["WBMP Support"]=>
  bool(true)
  ["XBM Support"]=>
  bool(false)
}