« Disable dragging of an element in JSXGraph | Home | Phabricator LDAP (and other) account integration table »
Possible crash in method_exists() with PHP 5.3
By admin | August 9, 2014
Apparently in some versions of PHP 5.3, calling method_exists() on a class which doesn’t exist seems to cause a crash. The solution, seen here, apparently involves checking class_exists() to prevent a potentially crashing call to method_exists().
This particular bug was causing the administration page of the MathJax-LaTeX WordPress plugin to be blank in the admin interface.
The trick is to replace the two lines in mathjax-latex-admin.php lines 91-92:
$wp_latex_disabled = method_exists('WP_LaTeX','init') ? "disabled='true'" : "";
$wp_latex_disabled_warning = method_exists('WP_LaTeX','init') ? "Disable wp-latex to use this syntax." : "";
with:
$wp_latex_disabled = (class_exists('WP_LaTeX', false) && method_exists('WP_LaTeX','init')) ? "disabled='true'" : "";
$wp_latex_disabled_warning = (class_exists('WP_LaTeX', false) && method_exists('WP_LaTeX','init')) ? "Disable wp-latex to use this syntax." : "";
If you found this article helpful or interesting, please help Compdigitec spread the word. Don’t forget to subscribe to Compdigitec Labs for more useful and interesting articles!
Topics: PHP | 22 Comments »
August 1st, 2025 at 21:05
… [Trackback]
[…] Find More to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 3rd, 2025 at 01:44
… [Trackback]
[…] Read More here to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 9th, 2025 at 19:28
… [Trackback]
[…] Read More Information here to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 14th, 2025 at 23:37
… [Trackback]
[…] Information on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 20th, 2025 at 02:20
… [Trackback]
[…] Find More on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 24th, 2025 at 21:50
… [Trackback]
[…] Find More here to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 25th, 2025 at 19:09
… [Trackback]
[…] Info to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
August 30th, 2025 at 21:49
… [Trackback]
[…] Read More Information here on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 3rd, 2025 at 00:28
… [Trackback]
[…] There you will find 16945 more Information to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 3rd, 2025 at 17:08
… [Trackback]
[…] Find More to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 10th, 2025 at 19:00
… [Trackback]
[…] Info to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 14th, 2025 at 18:18
… [Trackback]
[…] Here you will find 69021 more Info on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 23rd, 2025 at 23:41
… [Trackback]
[…] Read More on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 27th, 2025 at 06:25
… [Trackback]
[…] Read More here on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
September 30th, 2025 at 08:58
… [Trackback]
[…] Here you will find 31599 additional Information on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
November 13th, 2025 at 07:43
… [Trackback]
[…] Information to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 1st, 2025 at 21:00
… [Trackback]
[…] There you can find 99657 additional Info to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 3rd, 2025 at 02:51
… [Trackback]
[…] Here you will find 16014 more Info to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 3rd, 2025 at 07:21
… [Trackback]
[…] Information on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 9th, 2025 at 15:17
… [Trackback]
[…] Read More on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 15th, 2025 at 20:41
… [Trackback]
[…] Info on that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]
December 25th, 2025 at 18:52
… [Trackback]
[…] Read More to that Topic: compdigitec.com/labs/2014/08/09/possible-crash-in-method_exists-with-php/ […]