Edit Report a Bug

gd_info

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

gd_info — Retrieve information about the currently installed GD library

Descrizione

gd_info(): array

Gets information about the version and capabilities of the installed GD library.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns an associative array.

Elements of array returned by **gd_info()**
Attribute	Meaning
GD Version	string value describing the installed `libgd` version.
FreeType Support	bool 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`.
GIF Read Support	bool value. `true` if support for reading `GIF` images is included.
GIF Create Support	bool value. `true` if support for creating `GIF` images is included.
JPEG Support	bool value. `true` if `JPEG` support is included.
PNG Support	bool value. `true` if `PNG` support is included.
WBMP Support	bool value. `true` if `WBMP` support is included.
XBM Support	bool value. `true` if `XBM` support is included.
WebP Support	bool value. `true` if `WebP` support is included.
AVIF Support	bool value. `true` if `AVIF` support is included. Available as of PHP 8.1.0.

Esempi

Example #1 Using gd_info()

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

Il precedente esempio visualizzerà qualcosa simile a:

array(10) {
  ["GD Version"]=>
  string(24) "bundled (2.1.0 compatible)"
  ["FreeType Support"]=>
  bool(false)
  ["GIF Read Support"]=>
  bool(true)
  ["GIF Create Support"]=>
  bool(false)
  ["JPEG Support"]=>
  bool(false)
  ["PNG Support"]=>
  bool(true)
  ["WBMP Support"]=>
  bool(true)
  ["XBM Support"]=>
  bool(false)
  ["WebP Support"]=>
  bool(false)
  ["AVIF Support"]=>
  bool(false)
}

Vedere anche:

imagepng() - Output a PNG image to either the browser or a file
imagejpeg() - Invia l'immagine al browser o in un file
imagegif() - Invia l'immagine al browser o in un file
imagewbmp() - Invia l'immagine al browser o in un file
imagewebp() - Output a WebP image to browser or file
imageavif() - Invia l'immagine al browser o in un file
imagetypes() - Return the image types supported by this PHP build

add a note

User Contributed Notes 1 note

down

-3

yohami dot com - zerodj at hotmail dot com ¶

20 years ago


A cool resize / cropping script for creating thumbnails using mogrify

IMAGETEST.PHP

<?php 

include 'mogrify.php';

// variables from flash (my website uses flash and php)
$picture="sample.jpg";
$fixedwidth=300;
$fixedheight=240;
//

cropimage($picture,$fixedwidth,$fixedheight,$mogrify);

 ?>

MOGRIFY.PHP

<?php 
// walking the path
$mogrify="C:/apache/Imagik/mogrify.exe";

// ---------------------------------------- crop function

function cropimage($picture,$fixedwidth,$fixedheight,$mogrify) {

    // GET IMG
    $img = imagecreatefromjpeg($picture);
    $width= imagesx($img);
    $height= imagesy($img);
    // CROP WIDTH 
    if($width!=$fixedwidth){
        $ratio =$fixedwidth/$width;
        $NewHeight=round($height*$ratio);
        $NewWidth=round($width*$ratio);
        exec( $mogrify." -resize ".$NewWidth."x".$NewHeight."! $picture");
        exec( $mogrify." -crop ".$fixedwidth."x".$fixedheight."+0+0 $picture");
        // REFRESH
        $img = imagecreatefromjpeg($picture);
        $width= imagesx($img);
        $height= imagesy($img);
    }
    // CROP HEIGHT
    if($height!=$fixedheight){
        $ratio =$fixedheight/$height;
        $NewHeight=round($height*$ratio);
        $NewWidth=round($width*$ratio);
        exec( $mogrify." -resize ".$NewWidth."x".$NewHeight."! $picture");
        exec( $mogrify." -crop ".$fixedwidth."x".$fixedheight."+0+0 $picture");
    }
    //
    ImageDestroy($img);
}

?>

yeah!

add a note