I have written a module for a PHP IRC bot which uses a database for saving which nicks are "linked" to a Wikipedia account. To do this, I have the following code:
$pudb_wnas = file('cache.ucb');
foreach ($pudb_wnas as $lineNumber => $line) {
if (preg_match("/" . p_chars($ex[4]) . "~!/i", $line) != false) {
$found = true;
break;
}
}
if ($found) {
echo "!!!!!!!!!!!!!!!!FOUND!!!!!!!!!!!!!!!!!!\n";
$lines = file('cache.ucb', FILE_IGNORE_NEW_LINES);
$wnas_bu = $lines[$lineNumber];
$lines[$lineNumber] = trim($wnas_bu) . "~!" . $mask[0];
file_put_contents('cache.ucb', implode("\n", $lines));
} else {
$udb_wnas = fopen("cache.ucb", "a+");
fwrite($udb_wnas, "\n" . p_chars($ex[4]) . "~!" . $mask[0]);
fclose($udb_wnas);
}
The p_chars function, alongside with dp_chars, is a custom function to add or remove backslashes to some special characters:
function p_chars( $text ) {
$m_text = str_replace("(", "\(", $text);
$m_text = str_replace(")", "\)", $m_text);
return $m_text;
}
// Función para descodificar p_chars
function dp_chars( $text ) {
$m_text = str_replace("\(", "(", $text);
$m_text = str_replace("\)", ")", $m_text);
return $m_text;
}
The cache.ucb file (which is really nas.udb, but that's another story) contents are located here. You can also see the full code here.
The variable $ex[4], in this context, means the argument passed to the %nas command, which is used from IRC like this: %nas Test.
When you call the command, it searches on the cache.ucb file for a line starting with $ex[4]."~!". I use ~! as a separator. For example, if the command arguments were %nas Testing, it'd search for Testing~!. If it founds the line, it replaces it with itself plus "~!".$mask[0]. $mask[0] is the nickname of the user who called the command.
If it doesn't find the line, it'll add a new one following this structure: $ex[4]~!$mask[0]. So, as an example, if Bousie did %nas Testing, it would search for Testing~!. Assuming the line was Testing~!Test, it would replace it with Testing~!Test~!Bousie. Else, it'd add the line Testing~!Bousie.
The problem is that, if Bousie did %nas UnRar, it'd work properly. But if Bousie did %nas I(L)Verano, it'd add a new line. But there's already the I(L)Verano line. Note that it should convert the I(L)Verano argument to I\(L\)Verano before sarching it, so I don't know what I'm doing wrong on this code.
You'd really help me telling me what I'm doing wrong. Oh, and I tried with lots of codes I saw here, I tried mixing them and... Perhaps the problem is on the p_chars and dp_chars functions? I can't see it, though!