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phpversion

phpversion

Gets the current PHP version

 **phpversion**  $extension

Returns a string containing the version of the currently running PHP parser or extension.

extensionAn optional extension name.

Returns the current PHP version as a . If a argument is provided for parameter, returns the version of that extension, or false if there is no version information associated or the extension isn't enabled. string``string``extension``phpversion

Voorbeeld: example

<?php

// Prints e.g. 'Current PHP version: 8.3.12'
echo 'Current PHP version: ' . phpversion();

// Prints e.g. '1.22.3' or nothing if the extension isn't enabled
echo phpversion('zip');

?>

Voorbeeld: example and usage

<?php

/**
 * 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, ...
}

?>

Opmerking: > This information is also available in the predefined constant . More versioning information is available using the constants. PHP_VERSION``PHP_*_VERSION

Opmerking: > Some extensions may define their own version number. However, most bundled extension will use the PHP version as their version number.

PHP_VERSION constantsversion_compare``phpinfo``phpcredits``zend_version

Vorige ← phpinfo Volgende putenv →

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