Php Magic Quotes Gpc
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The PHP magic_quotes_gpc is a process that automatically escapes all the incoming data to the PHP script. The details about PHP magic_quotes_gpc can be viewed using phpinfo(). If an attacker successfully executes phpinfo(), he will be able to view all the details about the server. So it is recommended to disable phpinfo() in PHP.
get_magic_quotes_gpc() has been useless ever since PHP 5.4.0. It would tell you whether you have magic quotes switched on in the configuration or not. Magic quotes were a terrible idea and this feature was removed for security reasons (PHP developers believed in magic & superstitions and wrote unsecure code).
Many Open Source Software programs like Drupal, Prestashop, Joomla, Etc., require magic_quotes_gpc to be turned off. The snapshot to the right shows the magic quotes On in the phpinfo.php page. This article will show you how to turn maging_quotes_gpc off on your server.
Your PHP version must be 7.4. From this version the get_magic_quotes_gpc was deprecated. And there is no alternative to use it. So lets take out the code and make it work on. This function available inside session.inc and isession.inc.
Fatal error: Uncaught Error: Call to undefined function get_magic_quotes_gpc() in /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/class-egf-font-utilities.php:497 Stack trace: #0 /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/class-egf-font-utilities.php(254): EGF_Font_Utilities::json_decode() #1 /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/class-egf-font-utilities.php(335): EGF_Font_Utilities::get_google_fonts() #2 /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/customizer/class-egf-customize-manager.php(178): EGF_Font_Utilities::get_all_fonts() #3 /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/customizer/class-egf-customize-manager.php(229): EGF_Customize_Manager->customize_load_all_fonts() #4 /data/web/e14661/html/apps/wordpress-121852/wp-includes/class-wp-hook.php(292): EGF_Customize_Manager->customize_controls_enqueue_scripts() #5 /data/web/e14661/html/apps/wordpress-121852/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #6 /data/web/e14661/html/apps/wordpress-121852/wp-includes/plugin.php(484): WP_Hook->do_action() #7 /data/web/e14661/html/apps/wordpress-121852/wp-admin/customize.php(123): do_action() #8 {main} thrown in /data/web/e14661/html/apps/wordpress-121852/wp-content/plugins/easy-google-fonts/includes/class-egf-font-utilities.php on line 497
Specifically, the "wp_magic_quotes" function in \wp-includes\load.php, which is called (presumably on every response) in wp-settings.php. This function adds magic quotes to the data even if I turn off magic quotes in PHP settings.
Is it safe for me to just comment out the wp_magic_quotes() call in wp-settings.php? That is, will it negatively affect the normal Wordpress code and/or open up some exploitation vector? If so, is there some other way to do it besides modifying WP code (so I don't have to deal with this every time there's an update)?
Simply put WP turns indeterminate situation (magic quotes might or might not be enabled in server configuration) into determinate (magic quotes are always present and server configuration does not matter).
I did try addslashes, though it didn't seem to work. What I did now, was turn of magic_quotes_sybase, as well, and everything works just fine! Probably due to my lacking knowlegde, I thought it wouldn't matter.
Strange thing is, in the compatability.php file osC appears to check, wether magic_quotes is off or not. I guess there should be a check for magic_quotes_sybase, as well, since sybase overwrites the other settings, according to php.net ( -magic-quotes-gpc.php)
I'm having the same problem Martin described, and as with him, it's due to magic_quotes_sybase being on. I can't turn this off, however (that'd be up to my hosting provider and I doubt they want to change it just for me). So what I'm trying to do is add some code to compatibility.php (in catalog and in admin) to check for magic_quotes _sybase being set and strip off the extra quotes added to user input as escape characters.
I found some code on php.net and modified it to resemble the code already there for checking magic_quotes_gpc. It hasn't had any effect, however. Either my code is wrong, it isn't getting called, or it's getting called in the wrong place. Surely I'm not the only person out there who's had this problem; has anyone already solved this, and if so, would you please post your solution?
PROBLEM: magic_quotes_sybase is on, causing single quotes in user input (either customer input or owner input in Admin) to be escaped with another single quote. This results in output such as "Here'''''''''''''s your order" and, on e.g. the contact_us page, a fatal error ("call to a non-member object ...").
CODE: The code I added to includes/functions/compatibility.php in both catalog and admin in an attempt to solve this problem (modified to format of existing code for magic_quotes_gpc off, based on original code found here):
Your hosting provider can specify the magic_quotes_* settings per domain. Once these were changed to magic_quotes_gpc = on, magic_quotes_runtime = off, and magic_quotes_sybase = off, I've had no more problems. So there's the solution: get your hosting provider to set these variables to these values for your domain.
If yours pre-installer will not let you proceed because Magic Quotes GPC is set to on you have to turn in off. Magic quotes may be enabled or disabled in the php.ini file simply by changing the value of the magic_quotes_gpc from On to Off, or Off to On. Simply create a php.ini file with the following code: magic_quotes_gpc = Off or magic_quotes_gpc = 0. If you do not have access to the php.ini file, inquire with the System administrator for your host and ask about having Magic quotes turned off.
As a refresher, the current version of ACF will delete backslashes in any wysiwyg field upon saving. This issue exists because the ACF codebase has an extra call to stripslashes_deep() to deal with old PHP versions running magic quotes.
Anything new on this Issue? I have the same problem as ryanburnette. I developed a Javascript Content Editor which saves the content in an JSON Object but all the data is invalid (not parseable) if the slahes (escaped quotes) got stripped.
But ideally, the script developer should handle deprecation errors correctly, and not crash when hitting them, and maybe remove the get_magic_quotes_gpc() function completely (depending on which versions of PHP the script should support). 2b1af7f3a8