PHP PEAR::loadExtension方法代码示例

 /**
  * Check settings
  *
  * @since PHP 5
  */
 public function __construct()
 {
     if (!PEAR::loadExtension('gd')) {
         $this->isError(PEAR::raiseError("GD library is not available.", IMAGE_TRANSFORM_ERROR_UNSUPPORTED));
     } else {
         $types = ImageTypes();
         if ($types & IMG_PNG) {
             $this->_supported_image_types['png'] = 'rw';
         }
         if ($types & IMG_GIF || function_exists('imagegif')) {
             $this->_supported_image_types['gif'] = 'rw';
         } elseif (function_exists('imagecreatefromgif')) {
             $this->_supported_image_types['gif'] = 'r';
         }
         if ($types & IMG_JPG) {
             $this->_supported_image_types['jpeg'] = 'rw';
         }
         if ($types & IMG_WBMP) {
             $this->_supported_image_types['wbmp'] = 'rw';
         }
         if (!$this->_supported_image_types) {
             $this->isError(PEAR::raiseError("No supported image types available", IMAGE_TRANSFORM_ERROR_UNSUPPORTED));
         }
     }
 }

 /**
  *
  *
  */
 function Image_Transform_Driver_Imagick()
 {
     if (!PEAR::loadExtension('imagick')) {
         return PEAR::raiseError('The imagick extension can not be found.', true);
     }
     include 'Image/Transform/Driver/Imagick/ImageTypes.php';
     return true;
 }

 /**
  * @see http://www.imagemagick.org/www/formats.html
  */
 function __construct()
 {
     if (PEAR::loadExtension('imagick')) {
         include 'Image/Transform/Driver/Imagick/ImageTypes.php';
     } else {
         $this->isError(PEAR::raiseError('Couldn\'t find the imagick extension.', IMAGE_TRANSFORM_ERROR_UNSUPPORTED));
     }
 }

 /**
  *
  *
  */
 function Image_Transform_Driver_Imagick()
 {
     if (!extension_loaded('imagick')) {
         if (!PEAR::loadExtension('imagick')) {
             return PEAR::raiseError('The imagick extension can not be found.', true);
         }
     }
     return true;
 }

 /**
  * Class constructor. Checks that required options
  * are present and that the SAPRFC extension is loaded
  *
  * Options that can be passed and their defaults:
  * <pre>
  * array(
  *   'ASHOST' => "",
  *   'SYSNR'  => "",
  *   'CLIENT' => "000",
  *   'GWHOST' =>"",
  *   'GWSERV' =>"",
  *   'MSHOST' =>"",
  *   'R3NAME' =>"",
  *   'GROUP'  =>"",
  *   'LANG'   =>"EN",
  *   'TRACE'  =>"",
  *   'GETSSO2'=> true
  * )
  * </pre>
  *
  * @param array array of options.
  * @return void
  */
 function Auth_Container_SAP($options)
 {
     $saprfc_loaded = PEAR::loadExtension('saprfc');
     if (!$saprfc_loaded) {
         return PEAR::raiseError('Cannot use SAP authentication, ' . 'SAPRFC extension not loaded!');
     }
     if (empty($options['R3NAME']) && empty($options['ASHOST'])) {
         return PEAR::raiseError('R3NAME or ASHOST required for authentication');
     }
     $this->options = array_merge($this->options, $options);
 }

 function testsetGzip()
 {
     $h =& new HTTP_Download();
     $this->assertFalse(PEAR::isError($h->setGzip(false)), '$h->setGzip(false)');
     $this->assertFalse($h->gzip, '$h->gzip');
     if (PEAR::loadExtension('zlib')) {
         $this->assertFalse(PEAR::isError($h->setGzip(true)), '$h->setGzip(true) without ext/zlib');
         $this->assertTrue($h->gzip, '$h->gzip');
     } else {
         $this->assertTrue(PEAR::isError($h->setGzip(true)), '$h->setGzip(true) with ext/zlib');
         $this->assertFalse($h->gzip, '$h->gzip');
     }
     unset($h);
 }

 /**
  * Check settings
  *
  * @return mixed true or  or a PEAR error object on error
  *
  * @see PEAR::isError()
  */
 function __construct()
 {
     if (!PEAR::loadExtension('imlib')) {
         $this->isError(PEAR::raiseError('Couldn\'t find the imlib extension.', IMAGE_TRANSFORM_ERROR_UNSUPPORTED));
     }
 }

 /**
  * Connect to the database
  *
  * @return true on success, MDB2 Error Object on failure
  **/
 function connect()
 {
     $database_file = $this->_getDatabaseFile($this->database_name);
     if (is_resource($this->connection)) {
         if (count(array_diff($this->connected_dsn, $this->dsn)) == 0 && $this->connected_database_name == $database_file && $this->opened_persistent == $this->options['persistent']) {
             return MDB2_OK;
         }
         $this->disconnect(false);
     }
     if (!PEAR::loadExtension($this->phptype)) {
         return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'extension ' . $this->phptype . ' is not compiled into PHP', __FUNCTION__);
     }
     if (!empty($this->database_name)) {
         if ($database_file !== ':memory:') {
             if (!file_exists($database_file)) {
                 if (!touch($database_file)) {
                     return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Could not create database file', __FUNCTION__);
                 }
                 if (!isset($this->dsn['mode']) || !is_numeric($this->dsn['mode'])) {
                     $mode = 0644;
                 } else {
                     $mode = octdec($this->dsn['mode']);
                 }
                 if (!chmod($database_file, $mode)) {
                     return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Could not be chmodded database file', __FUNCTION__);
                 }
                 if (!file_exists($database_file)) {
                     return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'Could not be found database file', __FUNCTION__);
                 }
             }
             if (!is_file($database_file)) {
                 return $this->raiseError(MDB2_ERROR_INVALID, null, null, 'Database is a directory name', __FUNCTION__);
             }
             if (!is_readable($database_file)) {
                 return $this->raiseError(MDB2_ERROR_ACCESS_VIOLATION, null, null, 'Could not read database file', __FUNCTION__);
             }
         }
         $connect_function = $this->options['persistent'] ? 'sqlite_popen' : 'sqlite_open';
         $php_errormsg = '';
         if (version_compare('5.1.0', PHP_VERSION, '>')) {
             @ini_set('track_errors', true);
             $connection = @$connect_function($database_file);
             @ini_restore('track_errors');
         } else {
             $connection = @$connect_function($database_file, 0666, $php_errormsg);
         }
         $this->_lasterror = $php_errormsg;
         if (!$connection) {
             return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, 'unable to establish a connection', __FUNCTION__);
         }
         if (!empty($this->dsn['charset'])) {
             $result = $this->setCharset($this->dsn['charset'], $connection);
             if (PEAR::isError($result)) {
                 return $result;
             }
         }
         $this->connection = $connection;
         $this->connected_dsn = $this->dsn;
         $this->connected_database_name = $database_file;
         $this->opened_persistent = $this->getoption('persistent');
         $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
     }
     return MDB2_OK;
 }

// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors: Dave Mertens <dmertens@zyprexia.com>                        |
// +----------------------------------------------------------------------+
//
// $Id: Basex.php,v 1.6 2003/06/04 14:48:44 et Exp $
require_once "PEAR.php";
if (!defined('MATH_BASEX_MATHEXTENSION')) {
    if (PEAR::loadExtension('bcmath')) {
        define('MATH_BASEX_MATHEXTENSION', 'bcmath');
    } elseif (PEAR::loadExtension('gmp')) {
        define('MATH_BASEX_MATHEXTENSION', 'gmp');
    } else {
        define('MATH_BASEX_MATHEXTENSION', 'none');
    }
}
/**
* base X coding class
*
* I noticed that value of an int is different on most systems. 
* On my system (linux 2.4.18 with glibc 2.2.5) i can use 8-byte integers 
* (also called int64 or int8)
* On my laptop (Windows 2000) i only could use numbers up to 4-byte (32 bit) 
* integers.
* So you might want to test this first!
*

 /**
  * Connect to the database server, log in and open the database
  *
  * Don't call this method directly.  Use DB::connect() instead.
  *
  * @param array $dsn         the data source name
  * @param bool  $persistent  should the connection be persistent?
  *
  * @return int  DB_OK on success. A DB_Error object on failure.
  */
 function connect($dsn, $persistent = false)
 {
     if (!PEAR::loadExtension('fbsql')) {
         return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
     }
     $this->dsn = $dsn;
     if ($dsn['dbsyntax']) {
         $this->dbsyntax = $dsn['dbsyntax'];
     }
     $params = array($dsn['hostspec'] ? $dsn['hostspec'] : 'localhost', $dsn['username'] ? $dsn['username'] : null, $dsn['password'] ? $dsn['password'] : null);
     $connect_function = $persistent ? 'fbsql_pconnect' : 'fbsql_connect';
     $ini = ini_get('track_errors');
     $php_errormsg = '';
     if ($ini) {
         $this->connection = @call_user_func_array($connect_function, $params);
     } else {
         @ini_set('track_errors', 1);
         $this->connection = @call_user_func_array($connect_function, $params);
         @ini_set('track_errors', $ini);
     }
     if (!$this->connection) {
         return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, null, $php_errormsg);
     }
     if ($dsn['database']) {
         if (!@fbsql_select_db($dsn['database'], $this->connection)) {
             return $this->fbsqlRaiseError();
         }
     }
     return DB_OK;
 }

 /**
  * Creates a new Image_Transform object
  *
  * @param string $driver name of driver class to initialize. If no driver
  *               is specified the factory will attempt to use 'Imagick' first
  *               then 'GD' second, then 'Imlib' last
  *
  * @return object an Image_Transform object, or PEAR_Error on error
  *
  * @see PEAR::isError()
  * @see Image_Transform::setOption()
  */
 static function &factory($driver = '')
 {
     if ($driver == '') {
         $extensions = array('imagick' => 'Imagick2', 'gd' => 'GD', 'imlib' => 'Imlib');
         foreach ($extensions as $ext => $ext_driver) {
             if (PEAR::loadExtension($ext)) {
                 $driver = $ext_driver;
                 break;
             }
         }
         if (!$driver) {
             return PEAR::raiseError('No image library specified and none can be found.  You must specify driver in factory() call.', IMAGE_TRANSFORM_ERROR_ARGUMENT);
         }
     }
     @(include_once 'Image/Transform/Driver/' . basename($driver) . '.php');
     $classname = "Image_Transform_Driver_{$driver}";
     if (!class_exists($classname)) {
         return PEAR::raiseError('Image library not supported... aborting.', IMAGE_TRANSFORM_ERROR_UNSUPPORTED);
     }
     $obj = new $classname();
     // Check startup error
     if ($error = $obj->isError()) {
         $obj = $error;
     }
     return $obj;
 }

 /**
  * Archive_Zip Class constructor. This flavour of the constructor only
  * declare a new Archive_Zip object, identifying it by the name of the
  * zip file.
  *
  * @param    string  $p_zipname  The name of the zip archive to create
  * @access public
  */
 function Archive_Zip($p_zipname)
 {
     // ----- Check the zlib
     if (!extension_loaded('zlib')) {
         PEAR::loadExtension('zlib');
     }
     if (!extension_loaded('zlib')) {
         die("The extension 'zlib' couldn't be found.\n" . "Please make sure your version of PHP was built " . "with 'zlib' support.\n");
         return false;
     }
     // ----- Set the attributes
     $this->_zipname = $p_zipname;
     $this->_zip_fd = 0;
     return;
 }

 /**
  * Connect to the database server, log in and open the database
  *
  * Don't call this method directly.  Use DB::connect() instead.
  *
  * PEAR DB's sybase driver supports the following extra DSN options:
  *   + appname       The application name to use on this connection.
  *                   Available since PEAR DB 1.7.0.
  *   + charset       The character set to use on this connection.
  *                   Available since PEAR DB 1.7.0.
  *
  * @param array $dsn         the data source name
  * @param bool  $persistent  should the connection be persistent?
  *
  * @return int  DB_OK on success. A DB_Error object on failure.
  */
 function connect($dsn, $persistent = false)
 {
     if (!PEAR::loadExtension('sybase') && !PEAR::loadExtension('sybase_ct')) {
         return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
     }
     $this->dsn = $dsn;
     if ($dsn['dbsyntax']) {
         $this->dbsyntax = $dsn['dbsyntax'];
     }
     $dsn['hostspec'] = $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost';
     $dsn['password'] = !empty($dsn['password']) ? $dsn['password'] : false;
     $dsn['charset'] = isset($dsn['charset']) ? $dsn['charset'] : false;
     $dsn['appname'] = isset($dsn['appname']) ? $dsn['appname'] : false;
     $connect_function = $persistent ? 'sybase_pconnect' : 'sybase_connect';
     if ($dsn['username']) {
         $this->connection = @$connect_function($dsn['hostspec'], $dsn['username'], $dsn['password'], $dsn['charset'], $dsn['appname']);
     } else {
         return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, null, 'The DSN did not contain a username.');
     }
     if (!$this->connection) {
         return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, null, @sybase_get_last_message());
     }
     if ($dsn['database']) {
         if (!@sybase_select_db($dsn['database'], $this->connection)) {
             return $this->raiseError(DB_ERROR_NODBSELECTED, null, null, null, @sybase_get_last_message());
         }
         $this->_db = $dsn['database'];
     }
     return DB_OK;
 }

 /**
  * Connect and bind to LDAP server with either anonymous or authenticated bind depending on dsn info
  *
  * @param array $dsninfo dsn info as passed by DB::connect()
  * @param boolean $persistent kept for interface compatibility
  * @return DB_OK if successfully connected. A DB error code is returned on failure.
  */
 function connect($dsninfo, $persistent = false)
 {
     if (!PEAR::loadExtension('ldap')) {
         return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
     }
     $this->dsn = $dsninfo;
     $user = $dsninfo['username'];
     $pw = $dsninfo['password'];
     $host = $dsninfo['hostspec'];
     $port = $dsninfo['port'];
     $this->base = $dsninfo['database'];
     $this->d_base = $this->base;
     $version = $dsninfo['protocol'];
     if (empty($host)) {
         return $this->raiseError("no host specified {$host}");
     }
     // else ...
     if (isset($port)) {
         $conn = ldap_connect($host, $port);
     } else {
         $conn = ldap_connect($host);
     }
     if (!$conn) {
         return $this->raiseError(DB_ERROR_CONNECT_FAILED);
     }
     if (isset($version)) {
         ldap_set_option($conn, LDAP_OPT_PROTOCOL_VERSION, $version);
     } else {
         // Use 3 by default
         $res = ldap_set_option($conn, LDAP_OPT_PROTOCOL_VERSION, 3);
         // If 3 fails then we can try 2
         if (!$res) {
             ldap_set_option($conn, LDAP_OPT_PROTOCOL_VERSION, 2);
         }
     }
     if ($user && $pw) {
         $bind = @ldap_bind($conn, $user, $pw);
     } else {
         $bind = @ldap_bind($conn);
     }
     if (!$bind) {
         return $this->raiseError(DB_ERROR_BIND_FAILED);
     }
     $this->connection = $conn;
     return DB_OK;
 }

 /**
  * Connect to the database
  *
  * @return true on success, MDB2 Error Object on failure
  */
 function connect()
 {
     if (is_object($this->connection)) {
         if (count(array_diff($this->connected_dsn, $this->dsn)) == 0) {
             return MDB2_OK;
         }
         $this->connection = 0;
     }
     if (!PEAR::loadExtension($this->phptype)) {
         return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null, 'extension ' . $this->phptype . ' is not compiled into PHP', __FUNCTION__);
     }
     if ($this->options['ssl']) {
         $init = @mysqli_init();
         @mysqli_ssl_set($init, empty($this->dsn['key']) ? null : $this->dsn['key'], empty($this->dsn['cert']) ? null : $this->dsn['cert'], empty($this->dsn['ca']) ? null : $this->dsn['ca'], empty($this->dsn['capath']) ? null : $this->dsn['capath'], empty($this->dsn['cipher']) ? null : $this->dsn['cipher']);
         if ($connection = @mysqli_real_connect($init, $this->dsn['hostspec'], $this->dsn['username'], $this->dsn['password'], $this->database_name, $this->dsn['port'], $this->dsn['socket'])) {
             $connection = $init;
         }
     } else {
         $connection = @mysqli_connect($this->dsn['hostspec'], $this->dsn['username'], $this->dsn['password'], $this->database_name, $this->dsn['port'], $this->dsn['socket']);
     }
     if (!$connection) {
         if (($err = @mysqli_connect_error()) != '') {
             return $this->raiseError(null, null, null, $err, __FUNCTION__);
         } else {
             return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, 'unable to establish a connection', __FUNCTION__);
         }
     }
     if (!empty($this->dsn['charset'])) {
         $result = $this->setCharset($this->dsn['charset'], $connection);
         if (PEAR::isError($result)) {
             return $result;
         }
     }
     $this->connection = $connection;
     $this->connected_dsn = $this->dsn;
     $this->connected_database_name = $this->database_name;
     $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
     $this->supported['transactions'] = $this->options['use_transactions'];
     if ($this->options['default_table_type']) {
         switch (strtoupper($this->options['default_table_type'])) {
             case 'BLACKHOLE':
             case 'MEMORY':
             case 'ARCHIVE':
             case 'CSV':
             case 'HEAP':
             case 'ISAM':
             case 'MERGE':
             case 'MRG_ISAM':
             case 'ISAM':
             case 'MRG_MYISAM':
             case 'MYISAM':
                 $this->supported['transactions'] = false;
                 $this->warnings[] = $this->options['default_table_type'] . ' is not a supported default table type';
                 break;
         }
     }
     $this->_getServerCapabilities();
     return MDB2_OK;
 }