note 25510 added to language.operators.comparison
| From: | s dot leib at kopfteam dot de | Date: | Thu, 26 Sep 2002 08:49:32 +0000 |
| Subject: | note 25510 added to language.operators.comparison | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-37269@lists.php.net to get a copy of this message | ||
A good example for using the "===" operator. Check this out:
if (strpos($a, $b) === 0) { ... }
evaluates true exactly when $a *begins* with $b, i.e. if strpos returns Zero.
And why "===" ? Because if $b is not at all contained in $a, strpos will return
"false", which evaluates to "0" if compared to another numeric.
Now, "===" does not only compare the values but also the type, and since 'false'
is of a different type than "0", you'll get the result you expect. Cool, eh?
Have fun!
/sascha
--
http://www.php.net/manual/en/language.operators.comparison.php
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