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  1. Alexander Rath

    Mind you can also do that with more $s:

    And you can use curly brackets:

    Reply ↓
  2. Alexander Rath

    Mind you can also do that with more $s:

    <?php

  $var1 = 'var2';
  $var2 = 'nameOfVariable';

  $nameOfVariable = 'The value I want!';

  echo $$$var1;

?>

    And you can use curly brackets:

    <?php

  $var1 = 'nameOf';
  $var2 = 'TheVariable';

  $nameOfTheVariable = 'Another value I want!';

  echo ${$var1 . $var2}; // Use concatenation to generate the variable name and then access it //

?>
    Reply ↓
  3. sas

    no

    Reply ↓
  4. John Shammas

    Wow! I never even knew about this. Might be a pretty great asset in the future.

    Reply ↓
  5. Attila Hajzer

    how? ^

    Reply ↓
  6. Mahesh

    I would like to ask a question, How to show variable in between the text.
    E.g., I have
    “var1 = $_POST['username'];”

    I want to show it something like this,
    “Hello [username]“.

    How to do it?

    I tried this but it didn’t work,
    “echo Hello $var1;”

    Please help me regarding this.

    Reply ↓
    • Nerve

      $var1=$_POST’username’];
      echo “Hello [" . $var1 . "]“;

  7. sreevisakh

    Try like this

    $var=$_POST['username'];
    echo ‘Hello['.$var.']‘;

    Reply ↓
  8. Baylor Rae'

    If you need to create variables from an array there are two options.

    The first uses php extract()

     'Baylor', 'email' => 'baylor@example.com'));
echo $name; // Baylor
echo $email; // baylor@example.com

// example: http://baylorrae.codepad.org/VdIA118O

    The second options which will give you more control is php list()

    <?php

list($name, $email) = array('Baylor', 'baylorrae@gmail.com');

echo $name;
echo $email;

// example: http://baylorrae.codepad.org/WejSCaCB
    Reply ↓
  9. perpleXa

    this is really bad practice and with proper code you should not need that mutation of code.

    also, don’t directly output $_POST/$_GET or $_REQUEST content without using htmlentities() around it, as your site might be vulnerable to cross-site-scripting and other injections.

    Reply ↓
  10. Chris

    Hmmm, I’m probably just a little dense, but could you give an example of when this technique would be useful?

    Reply ↓
  11. NogZoiets

    I don’t believe this piece of code would be useful in any way. When coding in PhP or any other language, one of the things you should keep in mind is that your code should be readable by others.
    Of course the content of your code, the values of the var’s, shouldn’t be.

    But when using a snippet like this, you take a away the readability. So i have to agree with perpleXa that this is a bad practice. Srry.

    Reply ↓

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