note 107119 added to function.print-r
| From: | ari dot n dot schulman at gmail dot com | Date: | Mon, 09 Jan 2012 04:21:30 +0000 |
| Subject: | note 107119 added to function.print-r | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-185465@lists.php.net to get a copy of this message | ||
There is a comment below with an excellent function for print_r that is safe with a returned value
and with output buffering turned on (that is, safe with ob_start, etc). However, the posted function
is not recursion-safe. Recursive references in arrays or objects (such as, most notably, the globals
array) will cause a server crash when the function is invoked. Here is a modified, safe function,
which prints out something similar to what print_r itself would do with recursive variables (except,
again, this is safe to use with output buffering turned on):
<?php
* An alternative to print_r that unlike the original does not use output buffering when
* the return parameter is set to true.
*
* This function is modified from http://us.php.net/manual/en/function.print-r.php#75872.
* Modified by Ari N. Schulman (ari.n.schulman ||A|| gmail).
*/
function obsafe_print_r($var, $return = false, $html = false, $level = 0, &$visitedVars =
array()) {
$spaces = "";
$space = $html ? " " : " ";
$newline = $html ? "<br />" : "\n";
for ($i = 1; $i <= 6; $i++) {
$spaces .= $space;
}
$tabs = $spaces;
for ($i = 1; $i <= $level; $i++) {
$tabs .= $spaces;
}
if (is_array($var)) {
$title = "Array";
} elseif (is_object($var)) {
$title = get_class($var)." Object";
}
$output = $title . $newline . $newline;
foreach ($var as $key => $value) {
if (is_array($value) || is_object($value)) {
if (isset($visitedVars[md5(serialize($value))]))
{
$value = '*RECURSION*';
}
else
{
$visitedVars[md5(serialize($value))] = true;
$level++;
$value = obsafe_print_r($value, true, $html, $level, $visitedVars);
$level--;
}
}
else
{
$value = '('.gettype($value).') '.(is_string($value) ?
'"' : '').$value.(is_string($value) ? '"' : '');
}
$output .= $tabs . "[" . $key . "] => " . $value . $newline;
}
if ($return) return $output;
else echo $output;
}
?>
----
Server IP: 192.41.42.26
Probable Submitter: 69.143.136.104
----
Manual Page -- http://www.php.net/manual/en/function.print-r.php
Edit -- https://master.php.net/note/edit/107119
Del: integrated -- https://master.php.net/note/delete/107119/integrated
Del: useless -- https://master.php.net/note/delete/107119/useless
Del: bad code -- https://master.php.net/note/delete/107119/bad+code
Del: spam -- https://master.php.net/note/delete/107119/spam
Del: non-english -- https://master.php.net/note/delete/107119/non-english
Del: in docs -- https://master.php.net/note/delete/107119/in+docs
Del: other reasons-- https://master.php.net/note/delete/107119
Reject -- https://master.php.net/note/reject/107119
Search -- https://master.php.net/manage/user-notes.php