Request #7414 :: making var_export() generating correct PHP code with nested objects

Package home | Report new bug | New search | Development Roadmap

Status: Open | Feedback | All | Closed Since Version 1.6.0a3

Request #7414	making var_export() generating correct PHP code with nested objects
Submitted:	2006-04-17 20:44 UTC
From:	kenashkov at gmail dot com	Assigned:	arpad
Status:	Closed	Package:	PHP_Compat (version 1.5.0)
PHP Version:	4.4.1	OS:	GNU/Linux (fedora Core 4)
Roadmaps:	1.6.0a1
Subscription	Your email:

Comments Add Comment Add patch

[2006-04-17 20:44 UTC] kenashkov at gmail dot com (Vesselin Kenashkov)

Description:
------------
Backporting the fix for this http://bugs.php.net/bug.php?id=29361 (changing the generated code for objects - replacing the class definition - the class::__set_state call).

Here is a modification of the original code found in PHP/Compat/Function/var_export.php

Not tested to be identical to php5.1 function ! Just tested to be working and follow the representation from the examples.
-----------------------------------------------
if (!function_exists('var_export')) {
    function var_export($var, $return = false, $level = 0)
    {
        // Init
        $indent      = '  ';
        $doublearrow = ' => ';
        $lineend     = ",\n";
        $stringdelim = '\'';
        $newline     = "\n";
        $find        = array(null, '\\', '\'');
        $replace     = array('NULL', '\\\\', '\\\'');
        $out         = '';

        // Indent
        $level++;
        for ($i = 1, $previndent = ''; $i < $level; $i++) {
            $previndent .= $indent;
        }

        // Handle each type
        switch (gettype($var)) {
            // Array
            case 'array':
                $out = 'array (' . $newline;
                foreach ($var as $key => $value) {
                    // Key
                    if (is_string($key)) {
                        // Make key safe
                        for ($i = 0, $c = count($find); $i < $c; $i++) {
                            $var = str_replace($find[$i], $replace[$i], $var);
                        }
                        $key = $stringdelim . $key . $stringdelim;
                    }

                    // Value
                    if (is_array($value)) {
                        $export = var_export($value, true, $level);
                        $value = $newline . $previndent . $indent . $export;
                    } else {
                        $value = var_export($value, true, $level);
                    }

                    // Piece line together
                    $out .= $previndent . $indent . $key . $doublearrow . $value . $lineend;
                }

                // End string
                $out .= $previndent . ')';
                break;

            // String
            case 'string':
                // Make the string safe
                for ($i = 0, $c = count($find); $i < $c; $i++) {
                    $var = str_replace($find[$i], $replace[$i], $var);
                }
                $out = $stringdelim . $var . $stringdelim;
                break;

            // Number
            case 'integer':
            case 'double':
                $out = (string) $var;
                break;

            // Boolean
            case 'boolean':
                $out = $var ? 'true' : 'false';
                break;

            // NULLs
            case 'NULL':
            case 'resource':
                $out = 'NULL';
                break;

            // Objects
            case 'object':
                // Start the object export
                $out = get_class($var) . '::__set_state(array('.$newline;
                foreach(get_object_vars($var) as $key=>$value) {
                    $out .= $indent . $previndent . $stringdelim . $key . $stringdelim . $doublearrow;
                    if(is_array($value) || is_object($value)) {
                        $export = var_export($value, true, $level);
                        $out .= $export . $lineend;
                    } else {
                        $out .= var_export($value, true, $level) . $lineend;
                    }
                }
                $out .= $previndent . '))';
                break;
        }

        // Method of output
        if ($return === true) {
            return $out;
        } else {
            echo $out;
        }
    }
}

-----------------------------------------------


Test script:
---------------
class aa{
function __set_state($vars=array())
	{
	$obj =& new aa();
	foreach($vars as $key=>$value)
		$obj->$key = $value;
	return $obj;
	}
}

$obj = new aa;
$obj->nested_obj = new aa;
var_export(obj);

Expected result:
----------------
 aa::__set_state(array(
  'nested_obj' => aa::__set_state(array(
  )),
))

Actual result:
--------------
 class aa {
  var $nested_obj = 
  class aa {
  };
}

Comments

[2006-05-22 00:18 UTC] User who submitted this comment has not confirmed identity

If you submitted this note, check your email.If you do not have a message, click here to re-send
MANUAL CONFIRMATION IS NOT POSSIBLE.  Write a message to pear-dev@lists.php.net
to request the confirmation link.  All bugs/comments/patches associated with this

email address will be deleted within 48 hours if the account request is not confirmed!