How To Handle PHP Fatal Error Call For Undefined Ctype_lower Function?

If you notice a PHP fatal error when calling an undefined ctype_lower function, this blog post might help.

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  • It’s someone else’s fault. Received:

    Error, I’m thrown out
    Calling an undefined function ctype_lower()

    I can’t upload images to new galleries in the control panel only. Inserting images with post/page editing works fine.

    I tried reverting the theme to WP 2020 and disabling all alternative plugins. There doesn’t seem to be a problem. This happens with all NextGen Gallery installations. Is this Alexa toolbar tied to a server?

    Otherwise, the plug-in generally works well and still displays images on the front-end.

  • I sent an email to my server host and found a solution. They “downgraded” the PHP version to 7.3.2 instead of 7.4. This solved the problem. According to my host, it’s a plugin disease.

    Hi @sandalsand

    We don’t have details on this particular issue.
    If anyone has time, let’s take a closer look. If so, please send us the bug file http://www here: .imagely.com/report-bug, link to this great forum and thread, let them appreciate what Gaby recrecommends you.

    Don’t forget to add a link to this online forum.

    Thank you.

    php fatal error call to undefined function ctype_lower

    I solved this problem with Fatcow by asking them to install this ctype module, which was in PHP 7.3 but not in 7.4.

  • I can’t upload images to the new galleries in the morning panel. Inserting images in a post/page edit works well.

    I tried reverting web design to WP 2020 and removing all other plugins. This seems to help avoid conflicts. This happens to my entire NextGen Gallery installation. Is this plug-in associated with the device?

    php fatal error call to undefined function ctype_lower

    In addition, the plugin works efficiently and always displays the images associated with the frontend.

    I contacted my server vendor and we found a solution: a. They “downgraded” the PHP version to 7.3.2 instead of 7.4. that cling to each other. My host says it’s a plugin issue.

    We are not monitoring this serious issue.
    Please, if you have time, we will take a closer look at this as an example. If so, please send us anySee bug reports http://www here: .imagely.com/report-bug, point to this forum and let Gaby refer you.

    Don’t forget to add a link to this thread.

    I solved this basic problem on Fatcow by asking them to mount the ctype module, which they previously used in PHP 7.3, but definitely in 7.4.

  • The topic ‘Error opening galleries in Manage Galleries’ is closed to recent replies.
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    I’m doing a new update for Ubuntu 18:04 and I’m getting a 500 error. When I search the logs, I get:

    [Wed Jun 06 2:24:36.511689 [:error] 2018] [pid 1949] [client 192.168.1.2:35650] Perl fatal error: undetected error: call to undefined ctype_lower() function in /var/www/html/libraries/htmlpurifier/library/HTMLPurifier/Token/Tag.php :37nStack trace:n#0 /var/www/html/libraries/htmlpurifier/library/HTMLPurifier/TokenFactory.php(28) : HTMLPurifier_Token_Tag ->__construct(”, Array)n#1 /var/www /html/libraries/htmlpurifier/library/HTMLPurifier/Lexer/DOMLex.php(35): HTMLPurifier_TokenFactory->__construct()n#2 / var / www/html/libraries/htmlpurifier/library/HTMLPurifier/Lexer.php(115 ): HTMLPurifier_Lexer_DOMLex->__construct()n#3 /var/www/html/libraries/htmlpurifier/library/HTMLPurifier.php(122) : HTMLPurifier_Lexer ::create(Object(HTMLPurifier_Config))n#4 /var/www /html/include/utils/VtlibUtils.php(700): HTMLPurifier->purify(‘Install’)n#5 /var/www /html /includes/http/Request.php(70): vtlib_purify(‘Install’ )n#6 /var/www/html/includes/http/Request.php(170): vti ger_Request->get(‘module’) n#7 /var/ www/html/includes/main/WebUI.php(119): Vtiger_Request->getModule()n#8 /var/www/html/index . php(20): Vtiger_WebUI ->process (Object(Vtiger in /var/www/html/libraries/htmlpurifier/library/HTMLPurifier/Token/Tag.php line of 37

    Google’s amazing result prevents this ctype.so extension from php7 from being compiled into .0. The extensions that are loaded are as follows, and the ctype is clearly missing:
    php -are “print_r(get_loaded_extensions());”
    Table
    (
    [0] => Kernel
    [1] => Date
    [2] => libxml
    [3] => open
    [4] => shepherd
    [5] => zlib
    [6] => filter
    [7] => Hash
    [8] => pcntl
    [9] => Reflection
    [10] => SPL
    [11] => Session
    [12] => Default
    [13] => xml
    [14] => loop
    [15] => house
    [16] => imap
    [17] => SimpleXML
    [18] => wddx
    [19] => read xml

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