If you're trying to check whether the version of PHP you're running on is sufficient, don't screw around with `strcasecmp` etc. PHP already has a `version_compare` function, and it's specifically made to compare PHP-style version strings.
<?php
if (version_compare(phpversion(), '5.3.10', '<')) {
// php version isn't high enough
}
?>
phpversion
(PHP 4, PHP 5, PHP 7, PHP 8)
phpversion — Restituisce la versione del PHP
Descrizione
phpversion(): string
Restituisce una stringa contenente la versione dell'interprete PHP.
Nota:
Questa informazione รจ anche disponibile come costante predefinita
PHP_VERSION.
Example #1 Esempio di uso di phpversion()
<?php
// Ad esempio visualizza 'Current PHP version: 4.1.1'
echo 'Current PHP version: ' . phpversion();
?>Vedere anche version_compare(), phpinfo(), phpcredits(), php_logo_guid() e zend_version().
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User Contributed Notes 3 notes
cHao ¶
11 years ago
burninleo at gmx dot net ¶
8 years ago
Note that the version string returned by phpversion() may include more information than expected: "5.5.9-1ubuntu4.17", for example.
pavankumar at tutorvista dot com ¶
14 years ago
To know, what are the {php} extensions loaded & version of extensions :
<?php
foreach (get_loaded_extensions() as $i => $ext)
{
echo $ext .' => '. phpversion($ext). '<br/>';
}
?>
