after update to 3.7.1 again getting error undefined function wpcf7_add_shortcode

Try deactivating all other plugins and switching to the default theme. If you don’t see the error after that, reactivate them one by one.

Thanks Takayuki

i think i found the cause of the problem is when i update or deactivate the plugin, the error show because

wpcf7_add_shortcode function wont be there

THE SOLUTION i found

if ( is_plugin_active( ‘contact-form-7/contact-form-7.php’ ) ) {
wpcf7_add_shortcode(…
}

[Moderator Note: Please do not post in uppercase & shout at us. Post de-capped.]

Hello Mohammad Sabbagh ,

please we add this coe where ?

the solution i found

if ( is_plugin_active( ‘contact-form-7/contact-form-7.php’ ) ) {
wpcf7_add_shortcode(…
}

thank you

in “function.php” template file

explaining:

before few versions of this plugin we used to write for example:

wpcf7_add_shortcode( 'guest', 'wpcf7_text_shortcode_handler', true );

or

add_action( 'init', 'xxxxx_wpcf7_add_shortcode' );

function xxxxx_wpcf7_add_shortcode() {
wpcf7_add_shortcode( 'guest', 'wpcf7_text_shortcode_handler', true );
}

Later on this code cause error when u update or disable the plugin
so i found checking if the plugin is active will solve the issue
as following

if ( is_plugin_active( 'contact-form-7/contact-form-7.php' ) ) {
wpcf7_add_shortcode( 'guest', 'wpcf7_text_shortcode_handler', true );
}

Sorry it seems my solution is not correct

i will be back if i found good solution

anyway this error shows only when you update the plugin

so for now you can comment this line while updating

//wpcf7_add_shortcode( ‘guest’, ‘wpcf7_text_shortcode_handler’, true );

can you try this it works for me

if ( function_exists( 'wpcf7_add_shortcode' ) ) {
   wpcf7_add_shortcode( 'guest', 'wpcf7_text_shortcode_handler', true );
}