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Current File : /././home/tempvsty/pontiacques.org/wp-content/plugins/w3-total-cache//Util_Installed.php
<?php
namespace W3TC;

/**
 * Checks if different server modules are enabled and installed
 */
class Util_Installed {
	static public function opcache() {
		return function_exists( 'opcache_reset' ) && ini_get( 'opcache.enable' );
	}

	static public function apc() {
		return function_exists( 'apc_store' ) || function_exists( 'apcu_store' );
	}

	static public function apc_opcache() {
		return function_exists( 'apc_compile_file' ) && ini_get( 'apc.enable' );
	}

	public static function is_opcache_validate_timestamps() {
		return  ini_get( 'opcache.validate_timestamps' );
	}

	public static function is_apc_validate_timestamps() {
		return ini_get( 'apc.stat' );
	}

	static public function curl() {
		return function_exists( 'curl_init' );
	}



	static public function eaccelerator() {
		return function_exists( 'eaccelerator_put' );
	}



	static public function ftp() {
		return function_exists( 'ftp_connect' );
	}



	static public function memcached_auth() {
		static $r = null;
		if ( is_null( $r ) ) {
			if ( !class_exists( '\Memcached' ) )
				$r = false;
			else {
				$o = new \Memcached();
				$r = method_exists( $o, 'setSaslAuthData' );
			}
		}

		return $r;
	}



	static public function memcached() {
		return class_exists( 'Memcache' ) || class_exists( 'Memcached' );
	}



	static public function memcached_memcached() {
		return class_exists( 'Memcached' );
	}



	static public function memcached_aws() {
		return class_exists( '\Memcached' ) &&
			defined( '\Memcached::OPT_CLIENT_MODE' ) &&
			defined( '\Memcached::DYNAMIC_CLIENT_MODE' );
	}



	static function memcache_auth() {
		static $r = null;
		if ( is_null( $r ) ) {
			if ( !class_exists( '\Memcached' ) )
				$r = false;
			else {
				$o = new \Memcached();
				$r = method_exists( $o, 'setSaslAuthData' );
			}
		}

		return $r;
	}



	static public function redis() {
		return class_exists( 'Redis' );
	}



	static public function tidy() {
		return class_exists( 'tidy' );
	}



	static public function wincache() {
		return function_exists( 'wincache_ucache_set' );
	}



	static public function xcache() {
		return function_exists( 'xcache_set' );
	}



	/**
	 * Check if memcache is available
	 *
	 * @param array   $servers
	 * @param boolean $binary_protocol
	 * @param string  $username
	 * @param string  $password
	 * @return boolean
	 */
	static public function is_memcache_available( $servers, $binary_protocol, $username, $password ) {
		static $results = array();

		$key = md5( implode( '', $servers ) );

		if ( !isset( $results[$key] ) ) {
			$memcached = Cache::instance(
				'memcached',
				array(
					'servers'         => $servers,
					'persistent'      => false,
					'binary_protocol' => $binary_protocol,
					'username'        => $username,
					'password'        => $password
				)
			);

			if ( is_null( $memcached ) ) {
				return false;
			}

			$test_string = sprintf( 'test_' . md5( time() ) );
			$test_value  = array( 'content' => $test_string );

			$memcached->set( $test_string, $test_value, 60 );

			$test_value      = $memcached->get( $test_string );
			$results[ $key ] = ( ! empty( $test_value['content'] ) && $test_value['content'] === $test_string );
		}

		return $results[ $key ];
	}
}

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