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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 |
|---|---|
| 1611 | 'code' => array('css','html','php','js'), |
| 1612 | )); |
| 1613 | foreach ( $ext2type as $type => $exts ) |
| 1614 | if ( in_array($ext, $exts) ) |
| 1615 | return $type; |
| 1616 | } |
| 1617 | |
| 1618 | function wp_check_filetype( $filename, $mimes = null ) { |
| 1619 | // Accepted MIME types are set here as PCRE unless provided. |
| 1620 | $mimes = ( is_array( $mimes ) ) ? $mimes : apply_filters( 'upload_mimes', array( |
| 1621 | 'jpg|jpeg|jpe' => 'image/jpeg', |
| 1622 | 'gif' => 'image/gif', |
| 1623 | 'png' => 'image/png', |
| 1624 | 'bmp' => 'image/bmp', |
| 1625 | 'tif|tiff' => 'image/tiff', |
| 1626 | 'ico' => 'image/x-icon', |
| 1627 | 'asf|asx|wax|wmv|wmx' => 'video/asf', |
| 1628 | 'avi' => 'video/avi', |
| 1629 | 'mov|qt' => 'video/quicktime', |