phpinfo
Function for easy check minimum version of PHP
<?php
function phpMinV($v)
{
$phpV = PHP_VERSION;
if ($phpV[0] >= $v[0]) {
if (empty($v[2]) || $v[2] == '*') {
return true;
} elseif ($phpV[2] >= $v[2]) {
if (empty($v[4]) || $v[4] == '*' || $phpV[4] >= $v[4]) {
return true;
}
}
}
return false;
}
/* ---- Newer than 4 ---- */
if (phpMinV('4')) {
// .....
}
// or
if (phpMinV('4.*')) {
// .....
}
/* ---- Newer than 5.1 ---- */
if (phpMinV('5.1')) {
// .....
}
// or
if (phpMinV('5.1.*')) {
// .....
}
/* ---- Newer than 5.2.3 ---- */
if (phpMinV('5.2.3')) {
// .....
}
?>
phpversion
(PHP 4, PHP 5)
phpversion — Gets the current PHP version
Description
string phpversion
([ string $extension
] )
Returns a string containing the version of the currently running PHP parser or extension.
Parameters
- extension
-
An optional extension name.
Return Values
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.
Examples
Example #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');
?>
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. Its 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
- version_compare() - Compares two "PHP-standardized" version number strings
- phpinfo() - Outputs lots of PHP information
- phpcredits() - Prints out the credits for PHP
- php_logo_guid() - Gets the logo guid
- zend_version() - Gets the version of the current Zend engine
add a note
User Contributed Notesphpversion
Cyrus Hirvi
31-Aug-2009 12:15
31-Aug-2009 12:15
Sam Yong - hellclanner at live dot com
28-Aug-2009 02:48
28-Aug-2009 02:48
Take note that if you pass phpversion() with an empty string, eg.
<?php
echo phpversion('');
?>
It will not return anything, since it cannot find an extension with the name string(0) ''.
bitworks at web dot de
26-Jun-2009 12:31
26-Jun-2009 12:31
to realize if the actual version ist newer than '5.2.10'
simply use:
<?php
if (strnatcmp(phpversion(),'5.2.10') >= 0)
{
# equal or newer
}
else
{
# not sufficiant
}
?>
dmitry DOT seredinov AT gmail DOT com
10-Jan-2009 07:50
10-Jan-2009 07:50
To simple receive a major PHP version value (e.g., 5.2), you can use next:
<?php
// Output below will looks like '5.2', depends to your version
echo floatval(phpversion());
?>
pl DOT baasch AT skycube DOT net
14-Jul-2008 01:17
14-Jul-2008 01:17
In a addition to phpversion,..
if you've got a system like ubuntu or some else, you get
<?php
echo phpversion(); // 5.2.4-2ubuntu5.2
?>
To fix this, use the following:
<?php
echo substr(phpversion(),0,strpos(phpversion(), '-'));
?>