I DONT UNDERSTAND "EVAL()" WTFFF

[Jarod]

How do I use eval()? Man it's so confusing, I thought I had it at first. It work, but not until I really needed... I used it with a function and it's not doing so!

 

	// set_session("username", "user1");
function set_session($session, $username) {
	eval($_SESSION['$session'] = $_POST['$username']);
}

[oni-kun]

How do I use eval()? Man it's so confusing, I thought I had it at first. It work, but not until I really needed... I used it with a function and it's not doing so!

 

	// set_session("username", "user1");
function set_session($session, $username) {
	eval($_SESSION['$session'] = $_POST['$username']);
}

 

Maybe you should look at the eval function and read what it actually does.

[trq]

The first thing is that variables are not interpolated within single quotes, besides, you don't need eval for what you are doing.

 

function set_session($session, $postitem) {
  $_SESSION[$session] = $_POST[$postitem];
}

[Jarod]

OK wut did I do wrong in this???

 

Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `T_NUM_STRING' in C:\wamp\www\practices\test\index.php on line 1

 

eval("
if( !isset($_SESSION['server']) ) {
$_SESSION['server'] = \"Direct TV\";

echo $_SESSION['server']; 
} else {
echo \"<b>Server</b> already set! (\".  $_SESSION['server'] .\")\";
}
");

[Jarod]

OK wut did I do wrong in this???

 

Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `T_NUM_STRING' in C:\wamp\www\practices\test\index.php on line 1

 

eval("

if( !isset($_SESSION['server']) ) {

  $_SESSION['server'] = \"Direct TV\";

 

  echo $_SESSION['server'];

} else {

  echo \"<b>Server</b> already set! (\".  $_SESSION['server'] .\")\";

}

");

[co.ador]

What's that you want to do with the EVAL() function?

[trq]

What exactly are you trying to do? You don't need eval().

[premiso]

$ needs to be escaped inside of double quotes:

 

eval("if( !isset(\$_SESSION['server']) ) { 
    \$_SESSION['server'] = \"Direct TV\";
   
   echo \$_SESSION['server'];
} else {
   echo \"<b>Server</b> already set! (\".  \$_SESSION['server'] .\")\";
}
");

[premiso]

Please do not make repeat posts. Your questions has been answered in your other post.