note 47862 deleted from function.substr by betz
| From: | betz@php.net | Date: | Fri, 03 Dec 2004 15:01:37 +0000 |
| Subject: | note 47862 deleted from function.substr by betz | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-81316@lists.php.net to get a copy of this message | ||
Note Submitter: ebe at solidgrooves dot com
----
Here's a useful algorithm for parsing page ranges.
$pages = '34, 35, 36, 38-40, 93, 126';
$pageslen = strlen($pages);
for ($i=0; $i<$pageslen; $i++)
{if (ereg('[0-9]', $pages{$i}))
{$numbuff = $numbuff.$pages{$i};}
elseif ($pages{$i} == ',')
{$page[] = $numbuff;
$numbuff = '';}
elseif ($pages{$i} == '-')
{$j = 0;
$range[$j][0] = $numbuff;
$numbuff = '';
$i++;
do {
if (ereg('[0-9]',$pages{$i}))
{$numbuff = $numbuff.$pages{$i};}
$i++;
}
while ($pages{$i} != ',');
$range[$j][1] = $numbuff;
$numbuff = '';
}
}
$page[] = $numbuff;
$page[] gives you the singles, $range[][] gives you the ranges.
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Reason: useless note