PHP syntax explanation

Question

How can I translate to PHP syntax something like that:

if(isset($_GET['q'])//but q=is not empty or <2 because in this case redirect to) { do this } else { do this one }

I hope it's not too massy.

Thanks.

updated question

Why this code does not redirect ?

    if(isset($_GET['q']))
{ 
    if(!empty($_GET['q']) || $_GET['q']>2)
    {

    $q = $_GET['q'];
    $q = mysql_real_escape_string($q);
    $sql = $db->prepare ('SELECT * FROM t WHERE a = :a');
    $sql->bindParam(':a',$q);
    $sql->execute();

    }

    else

    {

      header("Location:somepage.php");

    }

} else {

$sql = $db->prepare ('SELECT * FROM t ORDER BY b');
$sql->execute();

}

There is a space between <? and php .. Remove that and give a shot. — Shankar Narayana Damodaran
– Shankar Narayana Damodaran, Commented Feb 11, 2014 at 10:06
Your code redirects if your URL is like page.php?q= which means there is no value passed for q — Shankar Narayana Damodaran
– Shankar Narayana Damodaran, Commented Feb 11, 2014 at 10:15

Shankar Narayana Damodaran · Accepted Answer · 2014-02-11 09:39:52Z

2

Do like this

<?php
if(isset($_GET['q']))
{
    if(!empty($_GET['q']) || $_GET['q']<2)
    {
        header("location:somepage.php");
    }
    else
    {
        echo "Cannot be redirected";
    }
}

answered Feb 11, 2014 at 9:39

Shankar Narayana Damodaran

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1 Comment

Shankar Narayana Damodaran Over a year ago

Your code redirects if your URL is like page.php?q= which means there is no value passed for q ...because that is how the code logic is written. If you want the logic to be act the other way change the !empty to empty on the first if statement.

inquam · Accepted Answer · 2014-02-11 10:06:06Z

2

What? Do you mean the code for the "text" you have?

if(isset($_GET['q']) && (!empty($_GET['q']) || $_GET['q'] < 2)) {
  // redirect here using header("location: foo.php") or some other function if you are using some framework.
}
else {
  /otherwise do something else.
}

Update to your updated question:

Because $_GET['q'] isn't empty? Do a var_dump of $_GET so we, and you, know what's in there. It's impossible to tell otherwise. But I think your code is doing exactly what you have told it to do. You just don't have the complete picture of what you want to accomplish.

edited Feb 11, 2014 at 10:06

answered Feb 11, 2014 at 9:39

inquam

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Comments

Thiefbrain · Accepted Answer · 2014-02-11 10:15:03Z

1

I assume q is a number here.

if (isset($_GET['q']) {
    if (empty($_GET['q'] || $_GET['q'] < 2)) {
        // do redirect here
    } else {
        // do mysql here
    }
}

answered Feb 11, 2014 at 10:15

Thiefbrain

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