<?php
//In fact, it can be lowercase, but it is difficult to distinguish, so we stipulate that it is usually uppercase
define('xiaoxie',true);
echo xiaoxie;
$hello=flase;
echo $hello;
?> ;
Why the output result of the previous code is 1 and
The output result of the later code is flase, shouldn't it be 0?
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First of all, false is misspelled.
Secondly, false prints out as empty and will not output 0.
Finally, you can only print out a 1.