php教程

imagetypes

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

imagetypes返回当前 PHP 版本所支持的图像类型

说明

imagetypes ( void ) : int

本函数以比特字段方式返回与当前 PHP 版本关联的 GD 库所支持的图像格式。将返回以下结果,IMG_GIF | IMG_JPG | IMG_PNG | IMG_WBMP| IMG_XPM。 例如要检查是否支持 PNG,这样做:

Example #1 imagetypes() 例子

<?php
if (imagetypes() & IMG_PNG) {
    echo 
"PNG Support is enabled";
}
?>

User Contributed Notes

ThunderCrew 30-Jul-2007 07:38
Im not a smart man but this seemd to be the simplest code and it worked.
Its at the very top of this directory.

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

Returned image info and more.

array(11) { ["GD Version"]=> string(27) "bundled (2.0.28 compatible)" ["FreeType Support"]=> bool(true) ["FreeType Linkage"]=> string(13) "with freetype" ["T1Lib Support"]=> bool(false) ["GIF Read Support"]=> bool(true) ["GIF Create Support"]=> bool(true) ["JPG Support"]=> bool(true) ["PNG Support"]=> bool(true) ["WBMP Support"]=> bool(true) ["XBM Support"]=> bool(true) ["JIS-mapped Japanese Font Support"]=> bool(false) }

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