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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 |
|---|---|
| 32 | |
| 33 | function __construct() { |
| 34 | if ( ! function_exists( 'did_action' ) || did_action( 'init' ) ) |
| 35 | $this->init(); |
| 36 | else |
| 37 | add_action( 'init', array( $this, 'init' ), 0 ); |
| 38 | } |
| 39 | |
| 40 | function init() { |
| 41 | do_action_ref_array( 'wp_default_scripts', array(&$this) ); |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * Prints scripts |
| 46 | * |
| 47 | * Prints the scripts passed to it or the print queue. Also prints all necessary dependencies. |
| 48 | * |
| 49 | * @param mixed $handles (optional) Scripts to be printed. (void) prints queue, (string) prints that script, (array of strings) prints those scripts. |
| 50 | * @param int $group (optional) If scripts were queued in groups prints this group number. |