Insert PHP functions in a variable [closed]

StackOverflow https://stackoverflow.com/questions/18903018

  •  29-06-2022
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Question

I need to insert

<?php if (isset($_GET["marke"])) { echo "?marke="; echo $_GET["marke"]; echo "&farbe=gelb"; } else { echo "?farbe=gelb"; } ?>

into a variable.

But of course

<?php
$var = if (isset($_GET["marke"])) { echo "?marke="; echo $_GET["marke"]; echo "&farbe=gelb"; } else { echo "?farbe=gelb"; }
?>

 <?php
echo $var;
?>

isn't working ^^ What would the right Code look like?

Was it helpful?

Solution 2

You don't need to use a function; just use the ternary operator.

$var = (isset($_GET["marke"])) ? "?marke=" . $_GET["marke"] . "&farbe=gelb" : "?farbe=gelb";

OTHER TIPS

You must initialize the var and concatenate the strings:

$var = "?";
if (isset($_GET["marke"])) {
    $var .= "marke=" . $_GET["marke"] . "&";
}
$var .= "farbe=gelb";

And then:

echo $var;

If you're just trying to set data to a variable if GET is set, and if not set to something else, use this:

if (isset($_GET["marke"])) 
  {
    $var = "?marke=".$_GET['marke']."&farbe=gelb";
  }
else
  {
    $var = "?farbe=gelb";
  }

But remember to validate GET data before using it with mysql etc, to make sure it's what you allow.

Assuming that you want to save the output into a variable, and then do something before outputting the variable again, you can do something like this:

<?php
$var = if (isset($_GET["marke"])) { echo "?marke="; echo $_GET["marke"]; echo "&farbe=gelb"; } else { echo "?farbe=gelb"; 

echo <<<_END
<html>
//write something here
</html>
_END;

echo $var;
?>

Hope that helps!

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