- var_dump: documentation ( source)
- version_compare: documentation ( source)
<?php
$base = '5.6.1.3b2';
$cmp = '5.6.1';
echo "$base vs $cmp: ";
var_dump(version_compare($base, $cmp));
echo "\n\n";
$cmp = '5.6.2';
echo "$base vs $cmp: ";
var_dump(version_compare($base, $cmp));
echo "\n\n";
$cmp = '5.6.3';
echo "$base vs $cmp: ";
var_dump(version_compare($base, $cmp));
echo "\n\n";
$cmp = '5.6.4';
echo "$base vs $cmp: ";
var_dump(version_compare($base, $cmp));
echo "\n\n";