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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 |
|---|---|
| 2196 | * |
| 2197 | * @since 5.3.0 |
| 2198 | * |
| 2199 | * @param array $query_data Custom query data. |
| 2200 | * @param string $query The query's SQL. |
| 2201 | * @param float $query_time Total time spent on the query, in seconds. |
| 2202 | * @param string $query_callstack Comma-separated list of the calling functions. |
| 2203 | * @param float $query_start Unix timestamp of the time at the start of the query. |
| 2204 | */ |
| 2205 | $query_data = apply_filters( 'log_query_custom_data', $query_data, $query, $query_time, $query_callstack, $query_start ); |
| 2206 | |
| 2207 | $this->queries[] = array( |
| 2208 | $query, |
| 2209 | $query_time, |
| 2210 | $query_callstack, |
| 2211 | $query_start, |
| 2212 | $query_data, |
| 2213 | ); |
| 2214 | } |