jmhobbs/storytlr_requirements_check.php

## storytlr_requirements_check.php
<?php
	class Check {

		protected static $errors = 0;
		protected static $include_found = true;

		public static function no_errors () {
			return true;//( 0 == self::$errors );
		}

		public static function error_count () {
			return self::$errors;
		}

		protected static function show_check_div ( $string, $class ) {
			echo '<div class="' . $class . '">' . $string . '</div>';
		}

		public static function good ( $string ) { self::show_check_div( $string, 'good' ); }
		public static function bad ( $string ) { self::$errors++; self::show_check_div( $string, 'bad' ); }
		public static function warn ( $string ) { self::show_check_div( $string, 'warn' ); }

		// Check the level of php available
		public static function PHP ( $required ) {
			if( 1 == version_compare( $required, phpversion() ) )
				Check::bad( "Your PHP version is too low, the minimum required is $required." );
			else
				Check::good( "PHP Version " . phpversion() . " meets requirement." );
		}

		public static function SettingValue ( $setting, $expected ) {
			if( $expected != ini_get( $setting ) )
				Check::bad( "PHP Setting '$setting' should be '". var_export( $expected, true ) . "'." );
			else
				Check::good( "PHP Setting '$setting' is '" . var_export( $expected, true ) ."'." );
		}

		// Check if a class exists
		public static function ClassExists ( $class, $name, $warn_only=false ) {
			if( class_exists( $class, false ) )
				Check::good( "Found $name." );
			else if( $warn_only )
				Check::warn( "Can not find $name." );
			else
				Check::bad( "Can not find $name." );
		}

		// Check if a function exists.
		public static function FunctionExists ( $function, $name, $warn_only=false ) {
			if( function_exists( $function ) )
				Check::good( "Found $name." );
			else if( $warn_only )
				Check::warn( "Can not find $name." );
			else
				Check::bad( "Can not find $name." );
		}

		// Check if a file can be included, is on the path.
		public static function CanInclude ( $include, $name, $warn_only=false ) {
			self::$include_found = true;
			set_error_handler( 'Check::include_error_handler', E_WARNING );
			include_once( $include );
			restore_error_handler();
			if( self::$include_found )
				Check::good( "Found $name." );
			else if( $warn_only )
				Check::warn( "Can not find $name." );
			else
				Check::bad( "Can not find $name." );
			return self::$include_found;
		}

		protected static function include_error_handler ( $errno, $errstr ) {
			self::$include_found = false;
		}

		// Checks an extension existence by phpversion. Doesn't work for all extensions.
		public static function ExtensionExists ( $extension, $name, $warn_only=false ) {
			if( false !== phpversion( $extension ) )
				Check::good( "Found $name." );
			else if( $warn_only )
				Check::warn( "Can not find $name." );
			else
				Check::bad( "Can not find $name." );
		}

		public static function PathWritable ( $path, $warn_only=false ) {
			$root = dirname( __FILE__ ) . '/../../';
			if( is_writable( $root . $path ) )
				Check::good( "$path is writable." );
			else if( $warn_only )
				Check::warn( "$path is not writable." );
			else
				Check::bad( "$path is not writable." );
		}
	} // Class Check
?>
<html>
	<head>
		<title>Storytlr Requirements Check</title>
		<style type="text/css">
			.good, .bad, .warn {
				padding: 5px;
				font-weight: bold;
				text-shadow: 1px 1px 2px #AAA;
				color: #FFF;
			}
			.good {
				background-color: #00BF00;
			}
			.bad {
				background-color: #BF2C00;
			}
			.warn {
				background-color: #BFB900;
			}
		</style>
	</head>
	<body>
		<div style="width: 500px; margin: 0 auto;">
		<h1>Storytlr Requirements Check</h1>
<?php
	Check::PHP( "5.0" );
	Check::SettingValue( "magic_quotes_gpc", false );

	if( Check::CanInclude( 'Zend/Version.php', 'Zend Framework' ) )
		if( Zend_Version::compareVersion( '1.0.0' ) > 0 )
			warn( 'Zend Version 1.0.0 or newer is recommended' );

	Check::FunctionExists( 'mcrypt_module_open', 'mcrypt' );
	Check::FunctionExists( 'curl_init', 'cURL' );
	Check::ExtensionExists( 'PDO', 'PDO' );
	Check::ExtensionExists( 'tidy', 'Tidy');
?>
		</div>
	</body>
</html>
	<?php
	class Check {

	protected static $errors = 0;
	protected static $include_found = true;

	public static function no_errors () {
	return true;//( 0 == self::$errors );
	}

	public static function error_count () {
	return self::$errors;
	}

	protected static function show_check_div ( $string, $class ) {
	echo '<div class="' . $class . '">' . $string . '</div>';
	}

	public static function good ( $string ) { self::show_check_div( $string, 'good' ); }
	public static function bad ( $string ) { self::$errors++; self::show_check_div( $string, 'bad' ); }
	public static function warn ( $string ) { self::show_check_div( $string, 'warn' ); }

	// Check the level of php available
	public static function PHP ( $required ) {
	if( 1 == version_compare( $required, phpversion() ) )
	Check::bad( "Your PHP version is too low, the minimum required is $required." );
	else
	Check::good( "PHP Version " . phpversion() . " meets requirement." );
	}

	public static function SettingValue ( $setting, $expected ) {
	if( $expected != ini_get( $setting ) )
	Check::bad( "PHP Setting '$setting' should be '". var_export( $expected, true ) . "'." );
	else
	Check::good( "PHP Setting '$setting' is '" . var_export( $expected, true ) ."'." );
	}

	// Check if a class exists
	public static function ClassExists ( $class, $name, $warn_only=false ) {
	if( class_exists( $class, false ) )
	Check::good( "Found $name." );
	else if( $warn_only )
	Check::warn( "Can not find $name." );
	else
	Check::bad( "Can not find $name." );
	}

	// Check if a function exists.
	public static function FunctionExists ( $function, $name, $warn_only=false ) {
	if( function_exists( $function ) )
	Check::good( "Found $name." );
	else if( $warn_only )
	Check::warn( "Can not find $name." );
	else
	Check::bad( "Can not find $name." );
	}

	// Check if a file can be included, is on the path.
	public static function CanInclude ( $include, $name, $warn_only=false ) {
	self::$include_found = true;
	set_error_handler( 'Check::include_error_handler', E_WARNING );
	include_once( $include );
	restore_error_handler();
	if( self::$include_found )
	Check::good( "Found $name." );
	else if( $warn_only )
	Check::warn( "Can not find $name." );
	else
	Check::bad( "Can not find $name." );
	return self::$include_found;
	}

	protected static function include_error_handler ( $errno, $errstr ) {
	self::$include_found = false;
	}

	// Checks an extension existence by phpversion. Doesn't work for all extensions.
	public static function ExtensionExists ( $extension, $name, $warn_only=false ) {
	if( false !== phpversion( $extension ) )
	Check::good( "Found $name." );
	else if( $warn_only )
	Check::warn( "Can not find $name." );
	else
	Check::bad( "Can not find $name." );
	}

	public static function PathWritable ( $path, $warn_only=false ) {
	$root = dirname( __FILE__ ) . '/../../';
	if( is_writable( $root . $path ) )
	Check::good( "$path is writable." );
	else if( $warn_only )
	Check::warn( "$path is not writable." );
	else
	Check::bad( "$path is not writable." );
	}
	} // Class Check
	?>
	<html>
	<head>
	<title>Storytlr Requirements Check</title>
	<style type="text/css">
	.good, .bad, .warn {
	padding: 5px;
	font-weight: bold;
	text-shadow: 1px 1px 2px #AAA;
	color: #FFF;
	}
	.good {
	background-color: #00BF00;
	}
	.bad {
	background-color: #BF2C00;
	}
	.warn {
	background-color: #BFB900;
	}
	</style>
	</head>
	<body>
	<div style="width: 500px; margin: 0 auto;">
	<h1>Storytlr Requirements Check</h1>
	<?php
	Check::PHP( "5.0" );
	Check::SettingValue( "magic_quotes_gpc", false );

	if( Check::CanInclude( 'Zend/Version.php', 'Zend Framework' ) )
	if( Zend_Version::compareVersion( '1.0.0' ) > 0 )
	warn( 'Zend Version 1.0.0 or newer is recommended' );

	Check::FunctionExists( 'mcrypt_module_open', 'mcrypt' );
	Check::FunctionExists( 'curl_init', 'cURL' );
	Check::ExtensionExists( 'PDO', 'PDO' );
	Check::ExtensionExists( 'tidy', 'Tidy');
	?>
	</div>
	</body>
	</html>