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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 |
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422 | $this->query_string .= (strlen($this->query_string) < 1) ? '' : '&'; |
423 | if ( !is_scalar($this->query_vars[$wpvar]) ) // Discard non-scalars. |
424 | continue; |
425 | $this->query_string .= $wpvar . '=' . rawurlencode($this->query_vars[$wpvar]); |
426 | } |
427 | } |
428 |
|
429 | // query_string filter deprecated. Use request filter instead. |
430 | if ( has_filter('query_string') ) { // Don't bother filtering and parsing if no plugins are hooked in. |
431 | $this->query_string = apply_filters('query_string', $this->query_string); |
432 | parse_str($this->query_string, $this->query_vars); |
433 | } |
434 | } |
435 |
|
436 | /** |
437 | * Set up the WordPress Globals. |
438 | * |
439 | * The query_vars property will be extracted to the GLOBALS. So care should |
440 | * be taken when naming global variables that might interfere with the |