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Plugin Description
Based on kukukuan’s Inline PHP, this plugin allows you to embed and run PHP code in posts, pages or widgets* with a WordPress shortcode.
(* Requires a shortcode enabled widget plugin, such as Section Widget.)
Usage
The plugin provides two pairs of shortcodes – [php]code[/php] and [echo]code[/echo]. these two pairs of shortcodes resembles the functionality of the <?php code ?> and <?= code ?> tags in a normal PHP script, respectively.
For example:
The answer to the <em>ultimate</em> math challenge, <strong>1+2</strong>, is...
[php]
$a = 1;
$b = 2;
echo $a + $b;
[/php]
Will become:
The answer to the <em>ultimate</em> math challenge, <strong>1+2</strong>, is...
3
The [echo] tag will automatically print the returned value of the first expression. Therefore, [echo]some_function()[/echo] is essentially equivalent to [php]echo some_function()[/php].
Some Important Notes
** This plugin will change the priority of the do_shortcode filter. If you are experiencing any conflict with other shortcode plugins, please disable the plugin and report the problem in the forums. **
Although I said the shortcode pairs resembles a <?php code ?> tag pair, there is an important difference. The PHP code in the shortcodes are executed in a “throw-away” local namespace, instead of the global one. All variables defined in a [php] code [/php] block cannot be accessed outside the block. Therefore, this will not work:
[php]
$a = 1;
$b = 2;
[/php]
The answer to the <em>ultimate</em> math challenge, <strong>1+2</strong>, is... [echo]$a+$b[/echo]
And neither would this:
[php]
$my_array = array('apple','orange');
foreach($my_array as $fruit):
[/php]
I like [echo]$fruit[/echo]
[php]endforeach;[/php]
To work around the first problem, you may use the global keyword:
[php]
global $a, $b;
$a = 1;
$b = 2;
[/php]
The answer to the <em>ultimate</em> math challenge, <strong>1+2</strong>, is... [php]global $a, $b; echo $a+$b[/php]
And to work around the second problem, you may use “real” PHP closing tags within your [php] code [/php] block to switch between PHP and HTML mode:
[php]
$my_array = array('apple','orange');
foreach($my_array as $fruit):
?>
I like <?php echo $fruit; ?>
<?php
endforeach;
[/php]
(Yes, it is a bit weird… you’d probably want to avoid doing that if possible.)
Screenshots
No screenshots provided
