Podręcznik PHP
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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.

Tabela 1. Elements of array returned by gd_info()

AttributeMeaning
GD Versionstring value describing the installed libgd version.
Freetype Supportboolean value. TRUE if Freetype Support is installed.
Freetype Linkagestring 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 Supportboolean value. TRUE if T1Lib support is included.
GIF Read Supportboolean value. TRUE if support for reading GIF images is included.
GIF Create Supportboolean value. TRUE if support for creating GIF images is included.
JPG Supportboolean value. TRUE if JPG support is included.
PNG Supportboolean value. TRUE if PNG support is included.
WBMP Supportboolean value. TRUE if WBMP support is included.
XBM Supportboolean value. TRUE if XBM support is included.

Przykład 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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