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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 6004 | * |
| 6005 | * Can be used for debug backtracking. |
| 6006 | * |
| 6007 | * @since 6.4.0 |
| 6008 | * |
| 6009 | * @param string $function_name The function that was called. |
| 6010 | * @param string $message A message explaining what has been done incorrectly. |
| 6011 | * @param int $error_level The designated error type for this error. |
| 6012 | */ |
| 6013 | do_action( 'wp_trigger_error_run', $function_name, $message, $error_level ); |
| 6014 | |
| 6015 | if ( ! empty( $function_name ) ) { |
| 6016 | $message = sprintf( '%s(): %s', $function_name, $message ); |
| 6017 | } |
| 6018 | |
| 6019 | $message = wp_kses( |
| 6020 | $message, |
| 6021 | array( |
| 6022 | 'a' => array( 'href' ), |