WordPress-Plugin: Show Upload Info

upload-info-shortcode.php

<?php
/*
Plugin Name: Show Upload Info
Description: Insert [uploadinfo] into a page to get detailed information about your upload environment.
Version:     1.3
Author:      Thomas Scholz
Author URI:  http://toscho.de
License:     GPL v2
*/
if ( ! function_exists( 'uploadinfo_shortcode' ) )
{
	/**
	 * Shows detailed information about the WordPress upload directory.
	 *
	 *  @return string
	 */
	function uploadinfo_shortcode()
	{
		$info                              = array();
		$out                               = "<b>WP Info</b>\n";
		// @see http://codex.wordpress.org/Function_Reference/wp_upload_dir
		$uploads                           = wp_upload_dir();

		$uploads['upload path exists'] = is_dir( $uploads['path'] );
		$uploads['upload basedir exists'] = is_dir( $uploads['basedir'] );

		if ( function_exists( 'is_multisite' ) )
		{
			$uploads['WP Multisite']       = is_multisite();
		}
		$stats                             = stat( $uploads['basedir'] );

		if ( function_exists( 'posix_getpwuid' ) )
		{
			$upload_uid                        = posix_getpwuid( $stats['uid'] );
			$upload_gid                        = posix_getgrgid( $stats['gid'] );

			$uploads['Upload Dir Owner']       =
				'ID: ' . $stats['uid'] . ', name: ' . $upload_uid['name'];
			$uploads['Upload Dir Group']       =
				'ID: ' . $stats['gid'] . ', name: ' . $upload_gid['name'];
		}
		$uploads['yearmonth_folders']      =
			(bool) get_option( 'uploads_use_yearmonth_folders' );
		$uploads['Upload Dir Permissions'] = fileperms( $uploads['basedir'] );

		$uploads['Upload Dir Permissions'] = substr(
			sprintf( '%o', fileperms( $uploads['basedir'] ) ), -4
		);
		$uploads['Upload Dir Writable']    =
			is_writable( $uploads['basedir'] );
		$uploads['Upload Path Writable']   =
			is_writable( $uploads['path'] );
		$uploads['upload_max_filesize']    = ini_get( 'upload_max_filesize' );

		$upload_tmp_dir = ini_get( 'upload_tmp_dir' );

		$uploads['upload_tmp_dir']         = $upload_tmp_dir ? $upload_tmp_dir : 'Not set';
		$uploads['file_uploads']           = ini_get( 'file_uploads' ) ? 'Allowed' : 'Forbidden';

		$base_dir = ini_get( 'open_basedir' );
		$base_dir = explode( PATH_SEPARATOR, $base_dir );
		$base_dir = implode( "\n                       ", $base_dir );

		$uploads['open_basedir']           = $base_dir;
		$uploads['Upload Rights']          = current_user_can( 'upload_files' );

		foreach ( $uploads as $key => $val )
		{
			$val = is_bool( $val ) ? ( $val ? 'True' : 'False' ) : $val;
			$out .= str_pad( ucwords( $key ) . ':', 23) . "$val\n";
		}

		unset( $key, $val );

		$out                           .= "\n<b>System Info</b>\n";

		$current_uid                    = posix_geteuid();
		$current_info                   = posix_getpwuid( $current_uid );
		$current_group                  = posix_getgrgid( $current_info['gid'] );

		$info['PHP version']            = phpversion();
		$info['Temp Dir']               = realpath( sys_get_temp_dir() );
		$info['Temp Dir Owner']         = fileowner( $info['Temp Dir'] );
		$info['Temp Dir Writable']      = is_writable( $info['Temp Dir'] );

		$info['Current Process Owner']  =
			'ID: ' . $current_uid . ', name: ' . $current_info['name'];
		$info['Current Process Group']  =
			'ID: ' . $current_info['gid'] . ', name: ' . $current_group['name'];

		foreach ( $info as $key => $val )
		{
			$val = is_bool( $val ) ? ( $val ? 'True' : 'False' ) : $val;
			$out .= str_pad("$key:", 23) . "$val\n";
		}

		return "<pre class='debug uploadinfo'>$out</pre>";
	}
}
/**
 * For PHP versions prior to 5.2.1.
 * From the user notes to sys_get_temp_dir()
 *
 * @return string
 */
if ( ! function_exists( 'sys_get_temp_dir' ) )
{
	function sys_get_temp_dir()
	{
		if ( $temp = getenv( 'TMP' ) )
			return $temp;
		if ( $temp = getenv( 'TEMP' ) )
			return $temp;
		if ( $temp = getenv( 'TMPDIR' ) )
			return $temp;

		$temp = tempnam( __FILE__, '' );

		if ( file_exists( $temp ) )
		{
			unlink( $temp );
			return dirname( $temp );
		}

		return null;
	}
}
add_shortcode( 'uploadinfo', 'uploadinfo_shortcode' );

thanks for sharing! this helped me alot!