[SOLVED] Test All $_POST for isnumeric?

[phpmo]

Is there a way to test all $_POST variables for being isnumeric. The script I'm writing only has numbers involved and the variables will differ as they are dynamically created using arrays from user generated forms.

 

This is what I"m using that doesn't seem to be working.

 

Even though all $_POST variables are numbers it still catches.

if (!is_numeric($_POST)){
	$emessage = "You May Only Use Numbers!<br>";
	$error = 1;
}

[wildteen88]

You'll need to loop through the post array in order to see if each item within the post array contains a number.

foreach($_POST as $form_field => $user_input)
{
    if(!is_numeric($_POST[$form_field]))
    {
        echo 'Form fields must only contain numbers!';
        break;
    }
}

[scottybwoy]

Reason being is that $_POST will be an array

 

 

Good luck

[phpmo]

I've tried this and when echoing the $_POST I'm still getting array instead of the value.

 

foreach($_POST as $form_field => $user_input)
{
    if(!is_numeric($_POST[$form_field]))
    {
    echo $_POST[$form_field];
        $emessage = "You May Only Use Numbers!<br>";
	$error = 1;
        break;
    }
}

[wildteen88]

Ok, how is your form laid out. Post some example code for form here.

[phpmo]

Here is where the $_POST is coming from and these rows can change. The user can either select to generate 1-100 rows from this line.

 

print "<tr><td>$variable </td><td><input type=text size=2 maxlength=2 name='a[$x]' value=$_POST[a][$x]> <input type=text size=2 maxlength=2 name='b[$x]'> <input type=text size=2 maxlength=2 name='c[$x]'> <input type=text size=2 maxlength=2 name='d[$x]'> <input type=text size=2 maxlength=2 name='e[$x]'></td></tr>";

 

So each name is an array so I use

$_POST[b][$x]

to check the value etc.

[wildteen88]

Try the following example code:

<?php

if(isset($_POST['submit']))
{
    $fr = range('a', 'e');

    foreach($fr as $f)
    {
        foreach($_POST[$f] as $k => $v)
        {

            $field = trim($_POST[$f][$k]);

            if(!empty($field) && !is_numeric($field))
            {
                $error =  "numbers only";
                break;
            }
        }

        if(isset($error)) break;
    }

    if(isset($error)) echo $error;
}

?>
<form method="post">
<?php

for($x = 0; $x < 3; $x++)
{
    $i = $x+1;

    echo @<<<EOF
  <p>
    <b>Line {$i}:</b><br />
    <input type="text" size="2" maxlength="2" name="a[$x]" value="{$_POST['a'][$x]}">
    <input type="text" size="2" maxlength="2" name="b[$x]" value="{$_POST['b'][$x]}">
    <input type="text" size="2" maxlength="2" name="c[$x]" value="{$_POST['c'][$x]}">
    <input type="text" size="2" maxlength="2" name="d[$x]" value="{$_POST['d'][$x]}">
    <input type="text" size="2" maxlength="2" name="e[$x]" value="{$_POST['e'][$x]}">
  </p>

EOF;
}
?>
  <input type="submit" name="submit" />
</form>

Is that how your form is laid out and does the form checking work fine for you?