note 37988 deleted from function.substr-count by nlopess
| From: | nlopess@php.net | Date: | Tue, 12 Jul 2005 15:12:42 +0000 |
| Subject: | note 37988 deleted from function.substr-count by nlopess | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-91817@lists.php.net to get a copy of this message | ||
Note Submitter: bishop
----
Here is a simple item frequency counter function, useful in reporting or statistical apps:
<?php
function count_item(&$freq, $item, $inc = 1) {
if (! is_array($freq)) {
$freq = array ();
}
$freq[$item] = (isset($freq[$item]) ? ($freq[$item] += $inc) : $inc);
return true;
}
?>
This function saves you the hassle of doing the isset() check each time you wish to increase the
frequency. If you're not normally concerned over PHP's warnings about uninitialized
variables, then you should probably start from the beginning. If you are, use the function above
like:
<?php
count_item($freq, 'foo');
count_item($freq, 'bar');
count_item($freq, 'foo');
?>
After this, $freq will equal array ('foo' => 2, 'bar' => 1)