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    <p>This is not enough. 1. You're missing cookies, $_COOKIE variable. 2. If you use $_REQUEST you're in trouble. 3. You didn't show your queries, you must enquote each variable with single quotes '' when you put it into query (especiall when the data is supposted to be an integer and you might think that quote is not necessary in that case, but that would be a big mistake). 4. Data used in your query could come from other source.</p> <p>The best way is to use data binding and have the data escaped automatically by the driver, this is available in PDO extension.</p> <p>Example code:</p> <pre><code>$PDO = new PDO('mysql:dbname=testdb;host=127.0.0.1' $user, $password); $stmt = $PDO-&gt;prepare("SELECT * FROM test WHERE id=? AND cat=?"); $stmt-&gt;execute(array($_GET["id"], $_GET["cat"])); $rows = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC); </code></pre> <p>You can also bind data using string keys:</p> <pre><code>$stmt = $PDO-&gt;prepare("SELECT * FROM test WHERE id = :id AND cat = :cat"); $stmt-&gt;execute(array(":id" =&gt; $_GET["id"], ":cat" =&gt; $_GET["cat"])); </code></pre> <p>If you want to learn PDO, you might find useful these helper functions I use:</p> <p><a href="http://www.gosu.pl/var/PDO.txt" rel="nofollow">http://www.gosu.pl/var/PDO.txt</a></p> <pre><code>PDO_Connect(dsn, user, passwd) - connects and sets error handling. PDO_Execute(query [, params]) - only execute query, do not fetch any data. PDO_InsertId() - last insert id. PDO_FetchOne(query [, params]) - fetch 1 value, $count = PDO_FetchOne("SELECT COUNT(*) .."); PDO_FetchRow(query [, params]) - fetch 1 row. PDO_FetchAll(query [, params]) - fetch all rows. PDO_FetchAssoc(query [, params]) - returns an associative array, when you need 1 or 2 cols 1) $names = PDO_FetchAssoc("SELECT name FROM table"); the returned array is: array(name, name, ...) 2) $assoc = PDO_FetchAssoc("SELECT id, name FROM table") the returned array is: array(id=&gt; name, id=&gt;name, ...) 3) $assoc = PDO_FetchAssoc("SELECT id, name, other FROM table"); the returned array is: array(id=&gt; array(id=&gt;'',name=&gt;'',other=&gt;''), id=&gt;array(..), ..) </code></pre> <p>Each of functions that fetch data accept as 2nd argument parameters array (which is optional), used for automatic data binding against sql injections. Use of it has been presented earlier in this post.</p>
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    1. PODoes this work to stop sql injections
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    1. USCzarek Tomczak
    1. USCzarek Tomczak
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    1. COI edited to show insert and update queries i am using
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    2. COCan't say whether these queries are safe, because the whole "$inserts=" line is not using $_GET/$_POST variables. The same goes for the 3rd line, using '$cid'.
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    3. COright.. All Login's and inserts are done with post. Orly some of my queries that pull data to be displayed are done with GET but i try to avoid that. Thanks for taking the time..
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