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runkit_sandbox_output_handler

(no version information, might be only in CVS)

runkit_sandbox_output_handler --  Specify a function to capture and/or process output from a runkit sandbox

Description

mixed runkit_sandbox_output_handler ( object sandbox [, mixed callback] )

Ordinarily, anything output (such as with echo() or print()) will be output as though it were printed from the parent's scope. Using runkit_sandbox_output_handler() however, output generated by the sandbox (including errors), can be captured by a function outside of the sandbox.

Note: Sandbox support (required for runkit_lint(), runkit_lint_file(), and the Runkit_Sandbox class) is only available with PHP 5.1 or specially patched versions of PHP 5.0 and requires that thread safety be enabled. See the README file included in the runkit package for more information.

Parameters

sandbox

Object instance of Runkit_Sandbox class on which to set output handling.

callback

Name of a function which expects one parameter. Output generated by sandbox will be passed to this callback. Anything returned by the callback will be displayed normally. If this parameter is not passed then output handling will not be changed. If a non-truth value is passed, output handling will be disabled and will revert to direct display.

Return Values

Returns the name of the previously defined output handler callback, or FALSE if no handler was previously defined.

Examples

Example 1. Feeding output to a variable

<?php
function capture_output($str) {
  $GLOBALS['sandbox_output'] .= $str;

  return '';
}

$sandbox_output = '';

$php = new Runkit_Sandbox();
runkit_sandbox_output_handler($php, 'capture_output');
$php->echo("Hello\n");
$php->eval('var_dump("Excuse me");');
$php->die("I lost myself.");
unset($php);

echo "Sandbox Complete\n\n";
echo $sandbox_output;
?>

The above example will output:

Sandbox Complete

Hello
string(9) "Excuse me"
I lost myself.

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