Title: php7.4 – Deprecated
Last modified: May 8, 2020

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# php7.4 – Deprecated

 *  [Jager-74](https://wordpress.org/support/users/jager-74/)
 * (@jager-74)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/php7-4-deprecated/)
 * Hi, great plugin.
 * On Woocommerce, /checkout/ page return:
 * 1. Deprecated: implode(): Passing glue string after array is deprecated. Swap
   the parameters in /var/www/shnet_wc/wp-content/plugins/post-smtp/Postman/Postman-
   Mail/google-api-client/vendor/google/apiclient/src/Google/Service/Resource.php
   on line 291
    Warning: Cannot modify header information – headers already sent
   by (output started at /var/www/shnet_wc/wp-content/plugins/post-smtp/Postman/
   Postman-Mail/google-api-client/vendor/google/apiclient/src/Google/Service/Resource.
   php:291) in /var/www/shnet_wc/wp-includes/pluggable.php on line 1284 2. Warning:
   Cannot modify header information – headers already sent by (output started at/
   var/www/shnet_wc/wp-content/plugins/post-smtp/Postman/Postman-Mail/google-api-
   client/vendor/google/apiclient/src/Google/Service/Resource.php:291) in /var/www/
   shnet_wc/wp-includes/pluggable.php on line 1281
 * 3. Warning: Cannot modify header information – headers already sent by (output
   started at /var/www/shnet_wc/wp-content/plugins/post-smtp/Postman/Postman-Mail/
   google-api-client/vendor/google/apiclient/src/Google/Service/Resource.php:291)
   in /var/www/shnet_wc/wp-includes/pluggable.php on line 1284

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 * 0 replies
 * 1 participant
 * Last reply from: [Jager-74](https://wordpress.org/support/users/jager-74/)
 * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/php7-4-deprecated/)
 * Status: not resolved