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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 |
|---|---|
| 2318 | * |
| 2319 | * @since 2.8.0 |
| 2320 | * |
| 2321 | * @param string $text |
| 2322 | * @return string |
| 2323 | */ |
| 2324 | function esc_attr( $text ) { |
| 2325 | $safe_text = wp_check_invalid_utf8( $text ); |
| 2326 | $safe_text = _wp_specialchars( $safe_text, ENT_QUOTES ); |
| 2327 | return apply_filters( 'attribute_escape', $safe_text, $text ); |
| 2328 | } |
| 2329 | |
| 2330 | /** |
| 2331 | * Escape a HTML tag name. |
| 2332 | * |
| 2333 | * @since 2.5.0 |
| 2334 | * |
| 2335 | * @param string $tag_name |
| 2336 | * @return string |