Code Duplication    Length = 8-8 lines in 2 locations

includes/wpinv-template-functions.php 2 locations

@@ 427-434 (lines=8) @@
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    $class  = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['class'] ) ) );
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    $output = '<select name="' . esc_attr( $args['name'] ) . '" id="' . esc_attr( $args['id'] ) . '" class="wpinv-select ' . $class . '"' . $multiple . ' data-placeholder="' . $placeholder . '" ' . trim( $options ) . $data_elements . '>';
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    if ( $args['show_option_all'] ) {
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        if( $args['multiple'] ) {
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            $selected = selected( true, in_array( 0, $args['selected'] ), false );
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        } else {
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            $selected = selected( $args['selected'], 0, false );
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        }
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        $output .= '<option value="all"' . $selected . '>' . esc_html( $args['show_option_all'] ) . '</option>';
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    }
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    if ( !empty( $args['options'] ) ) {
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@@ 438-445 (lines=8) @@
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    if ( !empty( $args['options'] ) ) {
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        if ( $args['show_option_none'] ) {
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            if( $args['multiple'] ) {
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                $selected = selected( true, in_array( "", $args['selected'] ), false );
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            } else {
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                $selected = selected( $args['selected'] === "", true, false );
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            }
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            $output .= '<option value=""' . $selected . '>' . esc_html( $args['show_option_none'] ) . '</option>';
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        }
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        foreach( $args['options'] as $key => $option ) {
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