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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 |
|---|---|
| 152 | if ( isset($redirect['port']) ) |
| 153 | $redirect_url .= ':' . $redirect['port']; |
| 154 | $redirect_url .= $redirect['path']; |
| 155 | if ( $redirect['query'] ) |
| 156 | $redirect_url .= '?' . $redirect['query']; |
| 157 | } |
| 158 | |
| 159 | if ( $redirect_url && $redirect_url != $requested_url ) { |
| 160 | // var_dump($redirect_url); die(); |
| 161 | $redirect_url = apply_filters('redirect_canonical', $redirect_url, $requested_url); |
| 162 | if ( $do_redirect) { |
| 163 | // protect against chained redirects |
| 164 | if ( !redirect_canonical($redirect_url, false) ) { |
| 165 | wp_redirect($redirect_url, 301); |
| 166 | exit(); |
| 167 | } else { |
| 168 | return false; |
| 169 | } |
| 170 | } else { |