note 121944 added to control-structures.while
| From: | nickleus at gmail dot com | Date: | Wed, 29 Nov 2017 15:34:42 +0000 |
| Subject: | note 121944 added to control-structures.while | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-209257@lists.php.net to get a copy of this message | ||
<?php
$i = -1;
while ($i) {
echo $i++;
}
?>
outputs "-1" then stops because "0" (zero) gets evaluated as FALSE.
this demonstrates why it's important for a PDO statement fetch-ing a column value inside a
while-loop to test explicitly for FALSE.
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Manual Page -- http://php.net/manual/en/control-structures.while.php
Edit -- https://master.php.net/note/edit/121944
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Del: useless -- https://master.php.net/note/delete/121944/useless
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Del: non-english -- https://master.php.net/note/delete/121944/non-english
Del: in docs -- https://master.php.net/note/delete/121944/in+docs
Del: other reasons-- https://master.php.net/note/delete/121944
Reject -- https://master.php.net/note/reject/121944
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