Core Function
View Source on Trac ↗ add_comment_meta()
add_comment_meta( mixed $comment_id, mixed $meta_key, mixed $meta_value, mixed $unique = false ) Adds meta data field to a comment.
Parameters 4 required
| Name / Type | Description |
|---|---|
| $comment_id int | Comment ID. Required |
| $meta_key string | Metadata name. Required |
| mixed | $meta_value Metadata value. Arrays and objects are stored as serialized data and will be returned as the same type when retrieved. Other data types will be stored as strings in the database: - false is stored and retrieved as an empty string ('') - true is stored and retrieved as '1' - numbers (both integer and float) are stored and retrieved as strings Must be serializable if non-scalar. Required |
| bool | $unique Optional. Whether the same key should not be added. Default false. Required |
Return Value
((int)
| false) Meta ID on success, false on failure.
Function Information
Since Version
2.9.0
Source File
wp-includes/comment.php
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