Whether php enables gd

What is the GD library used for? It is an extension library for PHP to process graphics. The GD library provides a series of APIs for processing pictures. You can use the GD library to process pictures or generate pictures. The GD library is not enabled by default in PHP. If you want it to support image processing functions, you must manually enable the GD library

##How to open the GD library

PHP programming from entry to proficiency)

The method to detect whether the GD library has been installed, the code is as follows:

';
        foreach(gd_info() as $cate=>$value){
            echo "$cate:$value
";
        }
    }
    else{
        echo '没有安装gd扩展';
    }
?>

The result is as follows:

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