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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 |
---|---|
2515 |
|
2516 | if ( $real_mime && $real_mime != $type ) { |
2517 | /** |
2518 | * Filters the list mapping image mime types to their respective extensions. |
2519 | * |
2520 | * @since 3.0.0 |
2521 | * |
2522 | * @param array $mime_to_ext Array of image mime types and their matching extensions. |
2523 | */ |
2524 | $mime_to_ext = apply_filters( |
2525 | 'getimagesize_mimes_to_exts', |
2526 | array( |
2527 | 'image/jpeg' => 'jpg', |
2528 | 'image/png' => 'png', |
2529 | 'image/gif' => 'gif', |
2530 | 'image/bmp' => 'bmp', |
2531 | 'image/tiff' => 'tif', |
2532 | ) |
2533 | ); |