PHP AND IF statement

Question

im tring to call php page from a simple html page, and i cant find the syntax error this is the html

<html>
<body style="background-color:#990000;">
<h5 align="center" style="font-family:tahoma;color:white;font-size:50px;"> Welcome! </h5> 

<form align="center" method="post" action="php_site.php"> 
First name: <input type="text" name="firstname"><br>
Last name: <input type="text" name="lastname"><br>
<input type="submit" value="Search!">
</form>
</body>
</html>

and this is the php

<?php   
if (isset($_POST['firstname']) && (isset($_POST['lastname'])))
{
    echo "Welcome $_POST['firstname']";
    echo "This is your last name $_POST['lastname']";  
}
else 
{
    echo "This is Empty!";
}
?>

thanks!

Was just a suggestion. That's what the comments box is for. It's up to the OP to test out the possibilities and "try" something. Not a points monger ;-) — Funk Forty Niner
– Funk Forty Niner, Commented Nov 30, 2013 at 15:58
@Fred-ii-: Right. So I suggest you leave the keys to your house on the door. It's up to you to test if that might be a problem. — Jon
– Jon, Commented Nov 30, 2013 at 16:00
My door is always open @Jon ;-) My "house" door that is. I ain't afraid of the big bad wolf hehehe — Funk Forty Niner
– Funk Forty Niner, Commented Nov 30, 2013 at 16:01

Boann · Accepted Answer · 2013-11-30 16:17:30Z

4

The syntax of the embedded references to $_POST inside the strings is not quite right. Some ways to fix it are:

Wrap them in {} brackets:

echo "Welcome {$_POST['firstname']}";
echo "This is your last name {$_POST['lastname']}";

Or, remove the single quotes:

echo "Welcome $_POST[firstname]";
echo "This is your last name $_POST[lastname]";

Or, use string concatentation with . instead of embedding:

echo "Welcome " . $_POST['firstname'];
echo "This is your last name " . $_POST['lastname'];

And/or, pull the values into plain-named variables first:

$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
echo "Welcome $firstname";
echo "This is your last name $lastname";

See the doc on variable parsing in strings.

edited Nov 30, 2013 at 16:17

answered Nov 30, 2013 at 15:58

Boann

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1 Comment

Jon Over a year ago

+1, or lose the single quotes around the keys. But concatenation is IMO the best.

131 · Accepted Answer · 2013-11-30 15:59:55Z

1

Try this:

<?php   
if (isset($_POST['firstname']) && isset($_POST['lastname']))
{
    echo "Welcome ".$_POST['firstname'];
    echo "This is your last name ".$_POST['lastname'];  
}
else 
{
    echo "This is Empty!";
}
?>

answered Nov 30, 2013 at 15:59

131

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Comments

Pain67 · Accepted Answer · 2013-11-30 15:59:11Z

0

<?php   
    if (isset($_POST['firstname']) && isset($_POST['lastname']) )
    {
        echo "Welcome ".$_POST['firstname'];
        echo "This is your last name $_POST['lastname']";  
    }
    else 
    {
        echo "This is Empty!";
    }
?>

answered Nov 30, 2013 at 15:59

Pain67

3361 silver badge9 bronze badges

Comments

Xarus · Accepted Answer · 2013-11-30 16:23:44Z

0

First off, you should set your set your $_POST values to variables.

    $firstname = $_POST['firstname'];
    $lastname = $_POST['lastname'];

Then, ensure that you're splitting the strings from the variables by using the concatenation punctuation .:

echo "Welcome" . $firstname; instead of echo "Welcome $_POST['firstname']";

Also, please post the syntax error you're getting. If PHP is breaking (white screen of death), then please add ini_set("display_errors", "1"); in order to write errors to the screen, and then post the error output.

edited Nov 30, 2013 at 16:23

answered Nov 30, 2013 at 16:03

Xarus

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2 Comments

Boann Over a year ago

Unrestrained import of all $_POST variables into the global scope is a bad idea. It's taken years to make it go away. Don't bring it back.

Xarus Over a year ago

No, fair enough - I think I need some more coffee, updated the answer.

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