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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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178 | * @since 1.5.0 |
179 | * @uses $wpdb |
180 | * @uses $wp_db_version |
181 | */ |
182 | function populate_options() { |
183 | global $wpdb, $wp_db_version; |
184 |
|
185 | $guessurl = wp_guess_url(); |
186 |
|
187 | do_action('populate_options'); |
188 |
|
189 | if ( ini_get('safe_mode') ) { |
190 | // Safe mode can break mkdir() so use a flat structure by default. |
191 | $uploads_use_yearmonth_folders = 0; |
192 | } else { |
193 | $uploads_use_yearmonth_folders = 1; |
194 | } |
195 |
|
196 | $options = array( |