- var_dump: documentation ( source)
- sha1: documentation ( source)
<?php
$a = "\n";
echo sha1($a)."\n";
$b = "\n ";
echo sha1($b)."\n";
echo "111111111111111111\n";
$a = "\x34\x32\x2E";
echo $a."\n";
echo sha1($a)."\n";
echo strlen($a)."\n";
var_dump($a=="42")."\n";
$b = '\x34\x32\x2E';
echo $b."\n";
echo strlen($b)."\n";
var_dump($b=="42")."\n";