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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 |
|---|---|
| 3232 | do_action( 'doing_it_wrong_run', $function, $message, $version ); |
| 3233 | |
| 3234 | /** |
| 3235 | * Filter whether to trigger an error for _doing_it_wrong() calls. |
| 3236 | * |
| 3237 | * @since 3.1.0 |
| 3238 | * |
| 3239 | * @param bool $trigger Whether to trigger the error for _doing_it_wrong() calls. Default true. |
| 3240 | */ |
| 3241 | if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true ) ) { |
| 3242 | if ( function_exists( '__' ) ) { |
| 3243 | $version = is_null( $version ) ? '' : sprintf( __( '(This message was added in version %s.)' ), $version ); |
| 3244 | $message .= ' ' . __( 'Please see <a href="http://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information.' ); |
| 3245 | trigger_error( sprintf( __( '%1$s was called <strong>incorrectly</strong>. %2$s %3$s' ), $function, $message, $version ) ); |
| 3246 | } else { |
| 3247 | $version = is_null( $version ) ? '' : sprintf( '(This message was added in version %s.)', $version ); |
| 3248 | $message .= ' Please see <a href="http://codex.wordpress.org/Debugging_in_WordPress">Debugging in WordPress</a> for more information.'; |
| 3249 | trigger_error( sprintf( '%1$s was called <strong>incorrectly</strong>. %2$s %3$s', $function, $message, $version ) ); |
| 3250 | } |