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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 |
|---|---|
| 86 | * |
| 87 | * The filter runs only once, the first time wptexturize() is called. |
| 88 | * |
| 89 | * @since 4.0.0 |
| 90 | * |
| 91 | * @see wptexturize() |
| 92 | * |
| 93 | * @param bool $run_texturize Whether to short-circuit wptexturize(). |
| 94 | */ |
| 95 | $run_texturize = apply_filters( 'run_wptexturize', $run_texturize ); |
| 96 | if ( false === $run_texturize ) { |
| 97 | return $text; |
| 98 | } |
| 99 | |
| 100 | /* translators: Opening curly double quote. */ |
| 101 | $opening_quote = _x( '“', 'opening curly double quote' ); |
| 102 | /* translators: Closing curly double quote. */ |
| 103 | $closing_quote = _x( '”', 'closing curly double quote' ); |
| 104 | |