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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 837 | * One of either `$function` or `$extension` must be provided, or they will fail by default. |
| 838 | * |
| 839 | * string $function Optional. A function name to test for the existence of. |
| 840 | * string $extension Optional. An extension to check if is loaded in PHP. |
| 841 | * bool $required Is this a required feature or not. |
| 842 | * string $fallback_for Optional. The module this module replaces as a fallback. |
| 843 | * } |
| 844 | * } |
| 845 | */ |
| 846 | $modules = apply_filters( 'site_status_test_php_modules', $modules ); |
| 847 | |
| 848 | $failures = array(); |
| 849 | |
| 850 | foreach ( $modules as $library => $module ) { |
| 851 | $extension = ( isset( $module['extension'] ) ? $module['extension'] : null ); |
| 852 | $function = ( isset( $module['function'] ) ? $module['function'] : null ); |
| 853 | |
| 854 | // If this module is a fallback for another function, check if that other function passed. |
| 855 | if ( isset( $module['fallback_for'] ) ) { |