- var_dump: documentation ( source)
- strcmp: documentation ( source)
<?php
$a = "1.0e6";
$b = "1.e6";
$c = 1000000;
$d = null;
echo 'a == b '; var_dump($a == $b);
echo 'a == c '; var_dump($a == $c);
echo 'a == d '; var_dump($a == $d);
echo "\n";
echo 'a === b '; var_dump($a === $b);
echo 'a === c '; var_dump($a === $c);
echo 'a === d '; var_dump($a === $d);
echo "\n";
echo 'strcmp(a, b) '; var_dump(@strcmp($a, $b));
echo 'strcmp(a, c) '; var_dump(@strcmp($a, $c));
echo 'strcmp(a, d) '; var_dump(@strcmp($a, $d));
echo 'strcmp(d, a) '; var_dump(@strcmp($d, $a));