13 lines
411 B
Markdown
13 lines
411 B
Markdown
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```php
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// The action callback function.
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function my_function_callback( $errors, $cart ) {
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// Validate the $cart object and add errors. For example, to create an error if the cart contains more than 10 items:
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if ( $cart->get_cart_contents_count() > 10 ) {
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$errors->add( 'my_error_code', 'Too many cart items!' );
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}
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}
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add_action( 'woocommerce_store_api_cart_errors', 'my_function_callback', 10 );
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```
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