Title: PHP error on Admin function Last modified: August 30, 2016 --- # PHP error on Admin function * Resolved [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/) * Thanks again for this great plugin. Just updated to version 1.3 and noticed a few things. * First thing, one of my existing popups (Top left and 40% size) was showing up in the middle of the page. * Second thing, I tried modifying the settings from Top Left to Top Center and, on Save, I got some PHP errors: * `Warning: file() [function.file]: Filename cannot be empty in /home/content/06/ 7129406/html/wp-content/plugins/popup-maker/includes/misc-functions.php on line 15` * This line got repeated twice then: * `Warning: Cannot modify header information - headers already sent by (output started at /home/content/06/7129406/html/wp-content/plugins/popup-maker/includes/ misc-functions.php:15) in /home/content/06/7129406/html/wp-admin/post.php on line 237` * Also twice. (I have exactly 2 popups – coincidence?) * This error did not prevent me from returning to admin page and this did not prevent me from changing this popup back to Top Left (same 4 error messages appeared on Save) and this restored the way the popup works as it did before. * You can see the popup in action (in the booking form) at this link: [http://hayagriva.org.au/?p=5872](http://hayagriva.org.au/?p=5872) Just look for the “View Booking Terms and Conditions” * I’m still using the plugin but it would be great if you could advise what I should do to stop the PHP errors. * [https://wordpress.org/plugins/popup-maker/](https://wordpress.org/plugins/popup-maker/) Viewing 14 replies - 1 through 14 (of 14 total) * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410758) * [@dccharron](https://wordpress.org/support/users/dccharron/) – Darn, beta tested for several weeks and didn’t catch that. Will put out a patch shortly. * That error first indicates your on an older version of PHP. I added that function for PHP 5.2 compatibility but seems something is awry. Can you post the contents of System Info from Popup Maker -> Tools here. I need to figure out why it may be occuring. * Will look for a quick solution, can you make changes to the PHP files manually to see if the fix I find works without pushing an update? * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410761) * [@dccharron](https://wordpress.org/support/users/dccharron/) – I think I found a better alternate function if you can test it that would be great. * In that file misc-functions.php is a function named get_called_class(). * If you can replace it with this and test again I would be greatful. I need to get this part worked out ASAP as v1.4 builds on the features that use this heavily. * ``` function get_called_class () { foreach ( debug_backtrace() as $trace ) { if ( isset( $trace['object'] ) ) { if ( $trace['object'] instanceof $trace['class'] ) { return get_class( $trace['object'] ); } } } return false; } ``` * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410775) * Made the change to get_called_class () in misc-functions.php as you suggested/ provided then tried updating one popup. Got a fatal error: * `Parse error: syntax error, unexpected '&', expecting ']' in /home/content/06/ 7129406/html/wp-content/plugins/popup-maker/includes/misc-functions.php on line 21` * This disabled my access to admin page completely so reverted to original code and all ok now. Of course it now generates the 4 errors I mentioned earlier. * I must confess changing PHP in situ is not my strong suit so perhaps I fouled things up. Happy to take advice and try it again if that’s useful to you. * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410778) * Weird. I just checked that the code that I used was correct. When I compared the code I got from the email to the code in your post, they were different! I had used the one from the email so I decided to copy and paste the code from the post and try it again. Failed again but different error this time: * `Fatal error: Class name must be a valid object or a string in /home/content/ 06/7129406/html/wp-content/plugins/popup-maker/includes/class-popmake-fields. php on line 23` * Weird. * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410780) * [@dccharron](https://wordpress.org/support/users/dccharron/) – Testing a different solution. There are several functions that are available, I need to find the most efficient one that works. * Bear with me and I’m gonna post 2 more for you to try now. * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410782) * #1 * ``` function get_called_class($level = 1, $trace = false) { if (!$trace) $trace = debug_backtrace(); if (!isset($trace[$level])) throw new Exception( 'Cannot find called class: stack level too deep'); if (!isset($trace[$level]['type'])) throw new Exception ( 'Cannot find called class: type not set'); switch ($trace[$level]['type']) { case '::': $lines = file($trace[$level]['file']); $i = 0; $callerLine = ''; while (stripos($callerLine, $trace[$level]['function']) === false) { $i++; $callerLine = $lines[$trace[$level]['line'] - $i] . $callerLine; } $pattern = '/([a-zA-Z0-9\_]+)::' . $trace[$level]['function'] . '/'; preg_match($pattern, $callerLine, $matches); if (!isset($matches[1])) { throw new Exception( 'Cannot find called class: originating method call is obscured'); } switch ($matches[1]) { case 'self': case 'parent': return get_called_class($level + 1, $trace); default: return $matches[1]; } case '->': switch ($trace[$level]['function']) { case '__get': if (!is_object($trace[$level]['object'])) { throw new Exception('Edge case fail. __get called on non object'); } return get_class($trace[$level]['object']); default: return $trace[$level]['class']; } default: throw new Exception ("Unknown backtrace method type"); } } ``` * #2 * ``` function get_called_class() { $bt = debug_backtrace(); $lines = file($bt[1]['file']); preg_match('/([a-zA-Z0-9\_]+)::'.$bt[1]['function'].'/', $lines[$bt[1]['line']-1], $matches); return $matches[1]; } ``` * #3 * ``` function get_called_class() { $bt = debug_backtrace(); $l = 0; do { $l++; $lines = file($bt[$l]['file']); $callerLine = $lines[$bt[$l]['line']-1]; preg_match('/([a-zA-Z0-9\_]+)::'.$bt[$l]['function'].'/', $callerLine, $matches); if ($matches[1] == 'self') { $line = $bt[$l]['line']-1; while ($line > 0 && strpos($lines[$line], 'class') === false) { $line--; } preg_match('/class[\s]+(.+?)[\s]+/si', $lines[$line], $matches); } } while ($matches[1] == 'parent' && $matches[1]); return $matches[1]; } ``` * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410784) * Try them in order. Let me know which works for you. Thanks for testing. * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410789) * Solution #1 worked perfectly. No errors. Updated perfectly. Tested perfectly. Will try the other two solutions now. * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410790) * Solution #2 worked perfectly too. No errors. Updated perfectly. Tested perfectly. Will try #3 now. * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410792) * Solution #3 worked perfectly too. No errors. Updated perfectly. Tested perfectly. Back to you now. * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410796) * [@dccharron](https://wordpress.org/support/users/dccharron/) – Awesome, thanks for the confirmation. Gonna include those in a patch in just a bit. I am working out one other issue and then can put out a patch. * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410813) * [@dccharron](https://wordpress.org/support/users/dccharron/) – Patch is live. * Please take a moment to [rate and review the plugin](https://wordpress.org/support/view/plugin-reviews/popup-maker) and or support. * Thread Starter [dccharron](https://wordpress.org/support/users/dccharron/) * (@dccharron) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410816) * I’ve updated to 1.3.1 and tested again. All working perfectly. How good is that! Thanks again. * Plugin Author [Daniel Iser](https://wordpress.org/support/users/danieliser/) * (@danieliser) * [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410889) * [@dccharron](https://wordpress.org/support/users/dccharron/) – Awesome! Happy I could help you out. Btw, when you have a moment, I would very much appreciate if you could quickly [rate the plugin](https://wordpress.org/support/view/plugin-reviews/popup-maker#postform), just to help us spread the word. Viewing 14 replies - 1 through 14 (of 14 total) The topic ‘PHP error on Admin function’ is closed to new replies. * ![](https://ps.w.org/popup-maker/assets/icon-256x256.gif?rev=3097653) * [Popup Maker - Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder](https://wordpress.org/plugins/popup-maker/) * [Frequently Asked Questions](https://wordpress.org/plugins/popup-maker/#faq) * [Support Threads](https://wordpress.org/support/plugin/popup-maker/) * [Active Topics](https://wordpress.org/support/plugin/popup-maker/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/popup-maker/unresolved/) * [Reviews](https://wordpress.org/support/plugin/popup-maker/reviews/) ## Tags * [errors](https://wordpress.org/support/topic-tag/errors/) * [php](https://wordpress.org/support/topic-tag/php/) * [popup](https://wordpress.org/support/topic-tag/popup/) * 14 replies * 2 participants * Last reply from: [Daniel Iser](https://wordpress.org/support/users/danieliser/) * Last activity: [10 years, 9 months ago](https://wordpress.org/support/topic/php-error-on-admin-function/#post-6410889) * Status: resolved