include'file1.php';.PHP 命名空间中的元素使用同样的原理。例如,类名可以通过三种方式引用:非限定名称,或不包含前缀的类名称,例如$a=new foo();或foo::staticmethod();。如果当前命...www.php.net

PHP所提供的重载(overloading)是指动态地创建类属性和方法。我们是通过魔术方法(magic methods)来实现的。 当调用当前环境下未定义或不 可见的类属性或方法时,重载方法会被调用。本节后面...www.php.net

Don't forget, because $_REQUEST is a different variable than $_GET and $_POST, it is treated as such in PHP -- modifying $_GET or $_POST elements at runtime will not affect th...www.php.net

PHP already provides a number of iterators for many day to day tasks. See SPL iteratorsfor a list. Examples Example #1 Basic usage This example demonstrates in which order methods ...www.php.net

2026年1月21日 - XML_OPTION_TARGET_ENCODING (integer) XML_OPTION_SKIP_TAGSTART (integer) XML_OPTION_SKIP_WHITE (integer) XML_SAX_IMPL (string) PHP StringPHP ...

(PHP 4 = 4.2.0, PHP 5, PHP 7, PHP 8) floatval—Get float value of a variable Description floatval( $value): Gets the value ofvalue. Parameters value May be any scalar type.floatval...www.php.net