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drupal_eval

  1. drupal
    1. 4.7
    2. 5
    3. 6 common.inc
Versions
4.7 – 6 drupal_eval($code)

Evaluate a string of PHP code.

This is a wrapper around PHP's eval(). It uses output buffering to capture both returned and printed text. Unlike eval(), we require code to be surrounded by <?php ?> tags; in other words, we evaluate the code as if it were a stand-alone PHP file.

Using this wrapper also ensures that the PHP code which is evaluated can not overwrite any variables in the calling code, unlike a regular eval() call.

Parameters

$code The code to evaluate.

Return value

A string containing the printed output of the code, followed by the returned output of the code.

Related topics

Input validation
Functions to validate user input.

▸ 2 functions call drupal_eval()

▾ 2 functions call drupal_eval()

block_list in modules/block.module
Return all blocks in the specified region for the current user.
filter_filter in modules/filter.module
Implementation of hook_filter(). Contains a basic set of essential filters.

Code

includes/common.inc, line 1197

<?php
function drupal_eval($code) {
  ob_start();
  print eval('?>' . $code);
  $output = ob_get_contents();
  ob_end_clean();
  return $output;
}
?>