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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 |
|---|---|
| 2298 | |
| 2299 | } |
| 2300 | } else { |
| 2301 | $error = __( 'File not found' ); |
| 2302 | } |
| 2303 | |
| 2304 | if (!empty ( $error ) ) { |
| 2305 | return $error; |
| 2306 | } else { |
| 2307 | return apply_filters( 'wp_create_thumbnail', $thumbpath ); |
| 2308 | } |
| 2309 | } |
| 2310 | |
| 2311 | ?> |
| 2312 | |