Array To String conversion Warning (PHP 8.0)

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Kind regards.

Looks like the email “Subject” field’s value may have some incorrect formatting. So it’s creating this notice in PHP 8 (PHP 7 was ignoring it).

What is the subject line of the email in question? The email that produces that notice.

It was the To: field that had the array.
I changed this line:
$line = sprintf(
‘Headers: %s, To: %s, Subject: %s’,
! empty( $args[‘headers’] && is_array( $args[‘headers’] ) ) ? implode( ‘ | ‘, $args[‘headers’] ) : ”,
! empty( $args[‘to’] ) : ”,
! empty( $args[‘subject’] ) ? $args[‘subject’] : ”
);

To this:
$line = sprintf(
‘Headers: %s, To: %s, Subject: %s’,
! empty( $args[‘headers’] && is_array( $args[‘headers’] ) ) ? implode( ‘ | ‘, $args[‘headers’] ) : ”,
! empty( $args[‘to’] && is_array( $args[‘to’] ) ) ? implode( ‘ ; ‘, $args[‘to’] ) : ”,
! empty( $args[‘subject’] ) ? $args[‘subject’] : ”
);

And the Warning no longer occurs.
Thank you.

That looks good but it doesn’t cover one scenario where the “to” field is not an array.

I have made a change to the plugin that should handle this. Please download the following copy of the plugin and test it out.

https://wp-ecommerce.net/wp-content/uploads/plugin-downloads/easy-wp-smtp.zip

Let me know how that goes.

Works just perfect. Thank you.