On 25 August 2008 00:54, Govinda advised:
>>
>>
>> if (stripos(strrev($file), "gpj.") === 0) {
>> echo $file;
>> }
>>
>> note the ===, 3 equals signs here is very important! check the docs
>> for why.
>
> == means 'equals', and === means 'is identical to'.
> Seems like they would do the same thing when comparing '0' to 'the
> position in the string where that substr is found'. Why not?
They would -- but stripos will also return FALSE if there is no match,
and FALSE==0 too!
>> or you could go a little more robust with regular expressions
>>
>> if (preg_match("#^.*\.(jpe?g|gif|png)$#i", $file) {
>> echo $file; // any image file is echo'ed
>> }
> ahhh reg expressions. So looking forward to when I can see PHP
> properly/clearly enough to throw them in too! (meanwhile I better get
> the basics first ;-)
Personally, I might be tempted to do something like this:
if (($pos = strrchr($file, '.'))!==FALSE):
switch (strtolower(substr($file, $pos))):
case '.gif':
case '.png':
case '.jpg':
case '.jpeg':
echo $file;
endswitch;
endif;
But then, I might go with the pattern match or the glob() solution, too!
;)
Cheers!
Mike
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Mike Ford, Electronic Information Developer,
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