PHP check if 0x0 is always true

Asked Mar 15 '19 at 12:26

Active Mar 15 '19 at 12:26

Viewed 17 times

I am reading some binary dataset and wanted to check if some value is x'00'. But my condition always returned true and I have no idea why...

My try was to do like that:

$value = 'i am not x0';
if ($value == 0x0) {
    echo "it is true" . PHP_EOL;
} else {
    echo "it is false" . PHP_EOL;
}

Why this if results in true?

asked Mar 15 '19 at 12:26

Andi S.

1

in short: type coercion. use `===` – Franz Gleichmann Mar 15 '19 at 12:28
1

The third answer to the duplicate is the most applicable to your situation, but all are worth reading. – Nick Mar 15 '19 at 12:29
Thx a lot, did not find this question when I searched. But now it is clear to me. – Andi S. Mar 15 '19 at 12:59

0 Answers0