Odd Strpos Behavior
| From: | Steve Keller | Date: | Mon, 09 Dec 2002 23:38:55 +0000 |
| Subject: | Odd Strpos Behavior | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-127570@lists.php.net to get a copy of this message | ||
I'm getting a really weird return from Strpos. What I'm doing is this, and anyone familiar with any of the table-runner programs for RPG's will know what I'm getting at here, I have a fields, like [adjective], [noun], etc., which I need to pull out and replace with values from included php files. Ok, so I have a string with those fields in it, and I have a loop that scans through the string for the first occurence of ]. On the first pass, strpos returns the first instance of where ] shows up in the string. Beautiful. I cut out the field, I create a filename, and it works just fine.
However, on the second run through the loop, instead of returning where ] is in the string, it returns where ] is +1. Huh? It's throwing off my script. Obviously, I could compensate by keeping a counter, but really, I shouldn't have to.
Anyone know why I'm getting this?
Here's the code. I echoed the values so I could see what was going wrong.
<?
$a = "[adjective] [beginning]";
$e = strpos($a,"]");
while ($e) {
echo "A: ".$a."<br />";
echo "E: ".$e."<br />";
$f = strpos($a, "[");
echo "F: ".$f."<br />";
$tmp = substr($a, 0, $f);
$table=substr($a, $f+1, $e-1);
echo "Table: ".$table."<br />";
$a = substr($a, $e+1, strlen($a));
$dataFile = $table.".php";
$tmp .= $dataFile;
$tmp .= $a;
$a = $tmp;
$e = strpos($a,"]");
}
# echo $a;
?>
This is running on Apache, php4.2.3
--
S. Keller
UI Engineer
The Health TV Channel, Inc.
(a non - profit organization)
3820 Lake Otis Pkwy.
Anchorage, AK 99508
907.770.6200 ext.220
907.336.6205 (fax)
Email: skeller@healthtvchannel.org
Web: www.healthtvchannel.org