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@ 2014-05-17T19:39:11Z

<!DOCTYPE html PUBLIC " - //W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1 - strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <title>Fibonacci sequence</title>
    <link rel="stylesheet" type="text/css" href="common.css" />
    <style type="text/css">
      th { text-align: left; background-color: #999; }
      th, td { padding: 0.4em; }
      tr.alt td { background: #ddd; }
    </style>
  </head>
  <body>
    <h2>Fibonacci sequence using recursion</h2>
    <table cellspacing="0" border="0" style="width: 20em; border: 1px solid #666;">
      <tr>
        <th>Sequence #</th>
        <th>Value</th>
      </tr>
<?php
$iterations = 10;function fibonacci( $n ) {
  if ( ( $n == 0 ) || ( $n == 1 ) ) return $n;
  return fibonacci( $n-2 ) + fibonacci( $n-1 );
}
for ( $i=0; $i <= $iterations; $i++ )
{
?>
      <tr<?php if ( $i % 2 != 0 ) echo ' class="alt"' ?>>
      <td>F<sub><?php echo $i?></sub></td>
      <td><?php echo fibonacci( $i )?></td>
      </tr>
<?php
}
?>
    </table>
  </body>
</html>

Output for git.master, git.master_jit, rfc.property-hooks: <!DOCTYPE html PUBLIC " - //W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1 - strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Fibonacci sequence</title> <link rel="stylesheet" type="text/css" href="common.css" /> <style type="text/css"> th { text-align: left; background-color: #999; } th, td { padding: 0.4em; } tr.alt td { background: #ddd; } </style> </head> <body> <h2>Fibonacci sequence using recursion</h2> <table cellspacing="0" border="0" style="width: 20em; border: 1px solid #666;"> <tr> <th>Sequence #</th> <th>Value</th> </tr> <tr> <td>F<sub>0</sub></td> <td>0</td> </tr> <tr class="alt"> <td>F<sub>1</sub></td> <td>1</td> </tr> <tr> <td>F<sub>2</sub></td> <td>1</td> </tr> <tr class="alt"> <td>F<sub>3</sub></td> <td>2</td> </tr> <tr> <td>F<sub>4</sub></td> <td>3</td> </tr> <tr class="alt"> <td>F<sub>5</sub></td> <td>5</td> </tr> <tr> <td>F<sub>6</sub></td> <td>8</td> </tr> <tr class="alt"> <td>F<sub>7</sub></td> <td>13</td> </tr> <tr> <td>F<sub>8</sub></td> <td>21</td> </tr> <tr class="alt"> <td>F<sub>9</sub></td> <td>34</td> </tr> <tr> <td>F<sub>10</sub></td> <td>55</td> </tr> </table> </body> </html>

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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