Auth/OpenID/BigMath.php-Dateireferenz

gehe zum Quellcode dieser Datei

Datenstrukturen
class	Auth_OpenID_MathLibrary
class	Auth_OpenID_BcMathWrapper
class	Auth_OpenID_GmpMathWrapper
Namensbereiche
namespace	OpenID
Funktionen
	Auth_OpenID_math_extensions ()
	Auth_OpenID_detectMathLibrary ($exts)
&	Auth_OpenID_getMathLib ()
	Auth_OpenID_setNoMathSupport ()
	Auth_OpenID_noMathSupport ()

---

Dokumentation der Funktionen

Auth_OpenID_detectMathLibrary

(

$

exts

)

Detect which (if any) math library is available

Definiert in Zeile 365 der Datei BigMath.php.

{
    $loaded = false;

    foreach ($exts as $extension) {
        // See if the extension specified is already loaded.
        if ($extension['extension'] &&
            extension_loaded($extension['extension'])) {
            $loaded = true;
        }

        // Try to load dynamic modules.
        if (!$loaded) {
            foreach ($extension['modules'] as $module) {
                if (@dl($module . "." . PHP_SHLIB_SUFFIX)) {
                    $loaded = true;
                    break;
                }
            }
        }

        // If the load succeeded, supply an instance of
        // Auth_OpenID_MathWrapper which wraps the specified
        // module's functionality.
        if ($loaded) {
            return $extension;
        }
    }

    return false;
}

& Auth_OpenID_getMathLib

(

)

Definiert in Zeile 419 der Datei BigMath.php.

{
    // The instance of Auth_OpenID_MathWrapper that we choose to
    // supply will be stored here, so that subseqent calls to this
    // method will return a reference to the same object.
    static $lib = null;

    if (isset($lib)) {
        return $lib;
    }

    if (Auth_OpenID_noMathSupport()) {
        $null = null;
        return $null;
    }

    // If this method has not been called before, look at
    // Auth_OpenID_math_extensions and try to find an extension that
    // works.
    $ext = Auth_OpenID_detectMathLibrary(Auth_OpenID_math_extensions());
    if ($ext === false) {
        $tried = array();
        foreach (Auth_OpenID_math_extensions() as $extinfo) {
            $tried[] = $extinfo['extension'];
        }
        $triedstr = implode(", ", $tried);

        Auth_OpenID_setNoMathSupport();

        $result = null;
        return $result;
    }

    // Instantiate a new wrapper
    $class = $ext['class'];
    $lib = new $class();

    return $lib;
}

Auth_OpenID_math_extensions

(

)

Define the supported extensions. An extension array has keys 'modules', 'extension', and 'class'. 'modules' is an array of PHP module names which the loading code will attempt to load. These values will be suffixed with a library file extension (e.g. ".so"). 'extension' is the name of a PHP extension which will be tested before 'modules' are loaded. 'class' is the string name of a Auth_OpenID_MathWrapper subclass which should be instantiated if a given extension is present.

You can define new math library implementations and add them to this array.

Definiert in Zeile 343 der Datei BigMath.php.

{
    $result = array();

    if (!defined('Auth_OpenID_BUGGY_GMP')) {
        $result[] =
            array('modules' => array('gmp', 'php_gmp'),
                  'extension' => 'gmp',
                  'class' => 'Auth_OpenID_GmpMathWrapper');
    }

    $result[] = array(
                      'modules' => array('bcmath', 'php_bcmath'),
                      'extension' => 'bcmath',
                      'class' => 'Auth_OpenID_BcMathWrapper');

    return $result;
}

Auth_OpenID_noMathSupport

(

)

Definiert in Zeile 466 der Datei BigMath.php.

{
    return defined('Auth_OpenID_NO_MATH_SUPPORT');
}

Auth_OpenID_setNoMathSupport

(

)

Definiert in Zeile 459 der Datei BigMath.php.

{
    if (!defined('Auth_OpenID_NO_MATH_SUPPORT')) {
        define('Auth_OpenID_NO_MATH_SUPPORT', true);
    }
}