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POpreg_match function doesn't work correctly in certain PHP script
 

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  1. POpreg_match function doesn't work correctly in certain PHP script
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    <p>I am using preg_match function to filter unwanted characters from a textarea form in 2 PHP scripts I made, but in one of them seems not to work.</p> <p>Here's the script with the problem:</p> <pre><code>&lt;?php //Database connection, etc...... mysql_select_db("etc", $con); $errmsg = ''; $chido = $_POST['chido']; $gacho = $_POST['gacho']; $maestroid = $_POST['maestroid']; $comentario = $_POST['comment']; $voto = $_POST['voto']; if($_POST['enviado']==1) { if (preg_match ('/[^a-zA-Z áéíóúüñÁÉÍÓÚÜÑ]/i', $comentario)) $errmsg = 1; if($errmsg == '') { //here's some queries, etc } } if($errmsg == 1) echo "ERROR: You inserted invalid characters..."; ?&gt; </code></pre> <p>So as you can see the preg_match just filter unwanted chracters like !"#$%&amp;/() etc..</p> <p>But every time I type a special character like 'ñ' or 'á' it triggers the error code.</p> <p>I have this very similar script that works perfectly with the same preg_match and filters just the unwanted characters:</p> <pre><code>//Database connection, etc.. mysql_select_db("etc", $con); $errmsg = ''; if ($_POST['enviado']==1) { $nombre = $_POST['nombre']; $apodo = $_POST['apodo']; $mat1 = $_POST['mat1']; $mat2 = $_POST['mat2']; $mat3 = $_POST['mat3']; if (preg_match ('/[^a-zA-Z áéíóúüñÁÉÍÓÚÜÑ]/i', $nombre)) $errmsg = 1; if($errmsg == '') { //more queries after validation } } if($errmsg == 1) echo "ERROR: etc......." ?&gt; </code></pre> <p>So the question is, what am I doing wrong in the first script??</p> <p>I tried everything but always fails and shows the error.</p> <p>Any suggestion?</p>
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    1. USDanny
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    1. COPrint the value of `$comentario` before you test it with `preg_match`, make sure it contains what you think it contains. We can't debug this for you without knowing the inputs you're using.
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    2. COOk let me try that.
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      1. USDanny
    3. COI echo'd the variable before and after the first IF and prints exactly what I typed, included the 'ñ' etc. Also, when I add things to the preg_match like 0-9 seems to make the correct changes and doesn't filter the numbers, the only problem actually happens just with the special characters like 'ñ'.
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      1. POpreg_match function doesn't work correctly in certain PHP script
      1. USDanny
 

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