• May 29, 2017
    <?php
    
      //You can even add more Dollar Signs
    
      $Bar = "a";
      $Foo = "Bar";
      $World = "Foo";
      $Hello = "World";
      $a = "Hello";
    
      $a; //Returns Hello
      $$a; //Returns World
      $$$a; //Returns Foo
      $$$$a; //Returns Bar
      $$$$$a; //Returns a
    
      $$$$$$a; //Returns Hello
      $$$$$$$a; //Returns World
    
      //... and so on ...//
    
    ?>
    <?php
    class foo {
        var $bar = 'I am bar.';
        var $arr = array('I am A.', 'I am B.', 'I am C.');
        var $r   = 'I am r.';
    }
    
    $foo = new foo();
    $bar = 'bar';
    $baz = array('foo', 'bar', 'baz', 'quux');
    echo $foo->$bar . "\n";
    echo $foo->{$baz[1]} . "\n";
    
    $start = 'b';
    $end   = 'ar';
    echo $foo->{$start . $end} . "\n";
    
    $arr = 'arr';
    echo $foo->{$arr[1]} . "\n";
    
    ?>
    <meta charset="utf-8">
    <?php 
    $one = "two"; 
    $two = "three"; 
    $three = "four"; 
    $four = "five"; 
    echo $$$$one; //prints 'five'. 
    ?> 
    
    <?php 
    $one = "two"; 
    $$one = "three"; 
    $$$one = "four"; 
    $$$$one = "five"; 
    echo $$$$one; //still prints 'five'. 
    ?>
    http://php.net/manual/en/language.variables.variable.php#sthash.kYJIhq2A.dpuf


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