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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 |
|---|---|
| 2220 | * |
| 2221 | * @since 2.8.0 |
| 2222 | * |
| 2223 | * @param string $text |
| 2224 | * @return string |
| 2225 | */ |
| 2226 | function esc_attr( $text ) { |
| 2227 | $safe_text = wp_check_invalid_utf8( $text ); |
| 2228 | $safe_text = _wp_specialchars( $safe_text, ENT_QUOTES ); |
| 2229 | return apply_filters( 'attribute_escape', $safe_text, $text ); |
| 2230 | } |
| 2231 | |
| 2232 | /** |
| 2233 | * Escaping for HTML attributes. |
| 2234 | * |
| 2235 | * @since 2.0.6 |
| 2236 | * |
| 2237 | * @deprecated 2.8.0 |
| 2238 | * @see esc_attr() |