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functions.php
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functions.php
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<?php
/**
* removes all files in the cache directory except the argument.
*
* @param string $cache_file the base name of the current cache file
* @return boolean true on success, false on failure
**/
function af_remove_old_caches($cache_file) {
$dirs = new DirectoryIterator('../cache');
foreach ($dirs as $file) {
if ($file->isDir()) {
continue;
}
if ($file->getFilename() != $cache_file &&
$file->getFilename()[0] != '.') {
if (!unlink($file->getRealPath())) {
return false;
}
}
}
return true;
}
/**
* filters the user-POSTed message
*
* @param string $msg
* @return string the filtered message
**/
function af_filter_message($msg) {
return trim($msg);
}
/**
* from the value generated from the HTML select tag, parse
* the recipient.
*
* @param string $val the input value, usually $_POST['recipient']
* @param string $primary_recipients
* @param string $secondary_recipients
* @return mixed as defined in the config file, false on failure
**/
function af_parse_recipient($val, $primary_recipients, $secondary_recipients) {
$recipient = false;
$first_char = $val[0];
$recp_id = substr($val, 1);
// false -> secondary recp.
$recp_is_primary = ($first_char == 'p');
if ($recp_is_primary && array_key_exists($recp_id, $primary_recipients)) {
$recipient = $primary_recipients[$recp_id];
} elseif (!$recp_is_primary &&
array_key_exists($recp_id, $secondary_recipients)) {
$recipient = $secondary_recipients[$recp_id];
}
return $recipient;
}
/**
* format a message for sending in a mail
*
* @param string $msg
* @return string
**/
function af_format_message($msg) {
$msg = wordwrap($msg, 75, "\n", true);
$msg = str_replace("\n", "\r\n", $msg);
return $msg;
}