phpversion
(PHP 3, PHP 4, PHP 5)
phpversion -- Gets the current PHP version
说明
string
phpversion ( [string extension] )
Returns a string containing the version of the currently running PHP
parser or extension.
参数
extension
An optional extension name.
返回值
If the optional extension
parameter is
specified, phpversion() returns the version of that
extension, or FALSE if there is no version information associated or
the extension isn't enabled.
范例
例 1. phpversion() example
<?php // prints e.g. 'Current PHP version: 4.1.1' echo 'Current PHP version: ' . phpversion();
// prints e.g. '2.0' or nothing if the extension isn't enabled echo phpversion('tidy'); ?>
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注释
注意:
This information is also available in the predefined constant
PHP_VERSION.