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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 |
|---|---|
| 2307 | */ |
| 2308 | function format_to_edit( $content, $rich_text = false ) { |
| 2309 | /** |
| 2310 | * Filters the text to be formatted for editing. |
| 2311 | * |
| 2312 | * @since 1.2.0 |
| 2313 | * |
| 2314 | * @param string $content The text, prior to formatting for editing. |
| 2315 | */ |
| 2316 | $content = apply_filters( 'format_to_edit', $content ); |
| 2317 | if ( ! $rich_text ) |
| 2318 | $content = esc_textarea( $content ); |
| 2319 | return $content; |
| 2320 | } |
| 2321 | |
| 2322 | /** |
| 2323 | * Add leading zeros when necessary. |
| 2324 | * |
| 2325 | * If you set the threshold to '4' and the number is '10', then you will get |