Very strange situation with Can't connect to local MySQL server
Question
I'm experiencing a strange situation, and it's the first time in 5 years...
my code:
<?php include("static/inc/settings.php"); ?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>News</title>
<link rel="stylesheet" href="static/css/style.css" media="screen" />
<script type="text/javascript" src="static/js/jquery.js"></script>
<script type="text/javascript" src="static/js/tinymce.min.js"></script>
<script type="text/javascript" src="static/js/script.js"></script>
</head>
<body>
<div id="master">
<?php if(isset($_POST["inserisci"])){
$tipo=$_POST["tipo"];
$titolo=$_POST["titolo"];
$testo=$_POST["testo"];
$link=$_POST["link"];
$info=pathinfo($_FILES["immagine"]["name"]);
$ext=$info["extension"];
$newname=md5($titolo.time()).".".$ext;
$target="static/uploads/".$newname;
move_uploaded_file($_FILES['immagine']['tmp_name'],$target);
mysql_query("INSERT INTO links(url) VALUES('".$link."');") or die(mysql_error()); ?>
<div class="inserito scompari">La news è stata inserita</div>
<?php } ?>
<div id="header">
<?php include("static/inc/menu.php"); ?>
</div>
<div id="main">
<div class="block">
<form enctype="multipart/form-data" id="inserisci_news" method="post">
<p>Tipo<br /><select name="tipo" id="tipo"><option value=""></option><option value="sinistra">sinistra</option><option value="sopra">sopra</option></select></p>
<p>Titolo<br /><input type="text" name="titolo" id="titolo" value="ciao" /></p>
<p>Testo<br /><textarea name="testo" id="testo">prova</textarea></p>
<p>Link<br /><input type="text" name="link" id="link" value="http://www.google.it" /></p>
<p>Immagine<br /><input type="file" name="immagine" value="" /></p>
<input type="submit" name="inserisci" value="Inserisci" />
</form>
</div>
</div>
</div>
</body>
</html>
basically, when I compile the form, I get an error in the query: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
but if I remove the if(isset($_POST["inserisci"])){ cycle.... It goes!!!
What the hell?
In settings.php there's the connection:
<?php $dbname="xxx";
$user="xxx";
$pswd="xxx";
$host="xxx";
if(!isset($link)){
$link=mysql_connect($host, $user, $pswd);
if(!$link){
die('Could not connect: '.mysql_error());
}
mysql_set_charset('utf8', $link);
$db_selected=mysql_select_db($dbname, $link);
if(!$db_selected){
die('Could not use db: '.mysql_error());
}
}
date_default_timezone_set('Europe/Rome'); ?>
1 answers
solution1
1 ACCPTED 2015-10-08 14:02:34
I think the problem is that you're doing everything with global variables and you've stomped on yourself.
The relevant line in settings.php:
$link=mysql_connect($host, $user, $pswd);
The relevant line in your code:
$link=$_POST["link"];
What you have done is overwritten the variable containing the MySQL connection with something else. This is probably resulting in your query not having a valid connection object to use. I don't know why removing the isset() conditional appears to cause the error to disappear, but I would recommend changing the name of either of these variables and seeing what happens.
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