Getting the version of php running

Check the PHP version safely

Use PHP_VERSION for the running version string and version_compare() when behavior depends on a minimum version. Avoid numeric or string comparisons that do not understand semantic version ordering.

<?php
echo PHP_VERSION . PHP_EOL;
if (version_compare(PHP_VERSION, '8.2.0', '>=')) {
    echo 'PHP 8.2 or newer';
}

Many time we will be interested in knowing what is the version of php running at our server. This information is available in php info file. But we can't use the value of php version by taking it from php info , so we will be using a constant PHP_VERSION to know the details about php running at the server.

<?Php
echo PHP_VERSION;
?>

Output ( may change based on your PHP version )

5.6.15

phpversion()

echo phpversion();

Output

5.6.15

version_compare()

version_compare(version1,version2,operator)

It returns -1 if the first version is lower than the second, 0 if they are equal, and 1 if the second is lower.

if (version_compare(PHP_VERSION, '5.3.0') >= 0) {
    echo 'I am at lower PHP version 5.3.0, my version: ' . PHP_VERSION;
}

Output

I am at lower PHP version 5.3.0, my version: 5.6.15

How to know MySQL Version?

how to check mysql support in php by using phpinfo

how to check MSSQL support in php by using phpinfo

how to check GD Support in php by using phpinfo

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