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PHP AJAX 1.5.1 (Default branch)
02-10-2008
PHPAjax is a PHP framework that allows you to create AJAX application defining PHP classes. The class must inherit from another class (phpajax), and must define some predefined methods and properties. All code you write is PHP, which automatically is transformed to Javascript at run time.|
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PHPVERSION(3) 1 PHPVERSION(3) phpversion - Gets the current PHP version SYNOPSIS
string phpversion ([string $extension]) DESCRIPTION
Returns a string containing the version of the currently running PHP parser or extension. PARAMETERS
o $extension - An optional extension name. RETURN VALUES
If the optional $extension parameter is specified, phpversion(3) returns the version of that extension, or FALSE if there is no version information associated or the extension isn't enabled. EXAMPLES
Example #1 phpversion(3) 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'); ?> Example #2 PHP_VERSION_ID example and usage <?php // PHP_VERSION_ID is available as of PHP 5.2.7, if our // version is lower than that, then emulate it if (!defined('PHP_VERSION_ID')) { $version = explode('.', PHP_VERSION); define('PHP_VERSION_ID', ($version[0] * 10000 + $version[1] * 100 + $version[2])); } // PHP_VERSION_ID is defined as a number, where the higher the number // is, the newer a PHP version is used. It's defined as used in the above // expression: // // $version_id = $major_version * 10000 + $minor_version * 100 + $release_version; // // Now with PHP_VERSION_ID we can check for features this PHP version // may have, this doesn't require to use version_compare() everytime // you check if the current PHP version may not support a feature. // // For example, we may here define the PHP_VERSION_* constants thats // not available in versions prior to 5.2.7 if (PHP_VERSION_ID < 50207) { define('PHP_MAJOR_VERSION', $version[0]); define('PHP_MINOR_VERSION', $version[1]); define('PHP_RELEASE_VERSION', $version[2]); // and so on, ... } ?> NOTES
Note This information is also available in the predefined constant PHP_VERSION. More versioning information is available using the PHP_VERSION_* constants. SEE ALSO
PHP_VERSION constants, version_compare(3), phpinfo(3), phpcredits(3), php_logo_guid(3), zend_version(3). PHP Documentation Group PHPVERSION(3)