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# gd_info

(PHP 4 >= 4.3.0, PHP 5)

gd_info -- Retrieve information about the currently installed GD library

## Description

array gd_info ( void )

Returns an associative array describing the version and capabilities of the installed GD library.

表格 1. Elements of array returned by gd_info()

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.

範例 1. Using gd_info()

`<?php var_dump(gd_info()); ?>`

The typical output is :

    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)
    }

See also imagepng(), imagejpeg(), imagegif(), imagewbmp(), and imagetypes().

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