Front - job location header

function.php

if ( ! function_exists( 'front_job_header_search_form' ) ) {
    function front_job_header_search_form( $args = array() ) {

        $defaults =  apply_filters( 'front_job_header_search_form_default_args', array(
            'keywords_title_text'       => esc_html__( 'what', 'front' ),
            'keywords_subtitle_text'    => esc_html__( 'job title, keywords, or company', 'front' ),
            'keywords_placeholder_text' => esc_html__( 'Keyword or title', 'front' ),
            'location_title_text'       => esc_html__( 'where', 'front' ),
            'location_subtitle_text'    => esc_html__( 'city, state, or zip code', 'front' ),
            'location_placeholder_text' => esc_html__( 'City, state, or zip', 'front' ),
            'category_title_text'       => esc_html__( 'which', 'front' ),
            'category_subtitle_text'    => esc_html__( 'department, industry, or specialism', 'front' ),
            'category_placeholder_text' => esc_html__( 'All Category', 'front' ),
            'search_button_text'        => esc_html__( 'Find Jobs', 'front' ),
            'background_color'          => 'bg-light',
            'current_page_url'          => '',
            'enable_container'          => true,
        ) );

        $args = wp_parse_args( $args, $defaults );

        extract( $args );

        $current_page_url = ! empty($current_page_url) ? $current_page_url : Front_WPJM::get_current_page_url();
        $current_page_query_args = Front_WPJM::get_current_page_query_args();

        ?>
        <div class="job-filters<?php echo esc_attr( !empty( $background_color ) ? ' ' . $background_color : '' ); ?>">
            <div class="<?php echo esc_attr( !empty( $enable_container ) ? 'container space-1' : '' ); ?>">
                <!-- Search Jobs Form -->
                <form class="job_filters_form" action="<?php echo esc_attr( $current_page_url ); ?>">
                    <?php do_action( 'job_manager_job_header_search_block_start' ); ?>
                    <div class="search_jobs row mb-2">
                        <?php do_action( 'job_manager_job_header_search_block_search_jobs_start' ); ?>

                        <div class="search_keywords col-lg-5 mb-4 mb-lg-0">
                            <!-- Input -->
                            <label for="search_keywords" class="d-block">
                                <span class="h4 d-block text-dark font-weight-semi-bold mb-0"><?php echo esc_html( $args['keywords_title_text'] ) ?></span>
                                <small class="d-block text-secondary">
                                    <?php echo esc_html( $args['keywords_subtitle_text'] ) ?>
                                </small>
                            </label>
                            <div class="js-focus-state">
                                <div class="input-group">
                                    <input type="text" name="search_keywords" id="search_keywords" class="form-control" placeholder="<?php echo esc_attr( $args['keywords_placeholder_text'] ) ?>" aria-label="<?php echo esc_attr( $args['keywords_placeholder_text'] ) ?>" aria-describedby="keywordInputAddon" value="<?php echo get_search_query(); ?>" />
                                    <div class="input-group-append">
                                        <span class="input-group-text">
                                        <span class="fas fa-search" id="keywordInputAddon"></span>
                                        </span>
                                    </div>
                                </div>
                            </div>
                            <!-- End Input -->
                        </div>
                        <div class="search_location col-lg-5 mb-4 mb-lg-0">
                            <!-- Input -->
                            <label for="search_location" class="d-block">
                                <span class="h4 d-block text-dark font-weight-semi-bold mb-0"><?php echo esc_html( $args['location_title_text'] ) ?></span>
                                <small class="d-block text-secondary">
                                    <?php echo esc_html( $args['location_subtitle_text'] ) ?>
                                </small>
                            </label>
                            <div class="js-focus-state">
                                <?php if ( taxonomy_exists( 'job_listing_region' ) && get_option( 'job_manager_regions_filter' ) ) : ?>
                                    <?php wp_dropdown_categories( array('taxonomy' => 'job_listing_region', 'show_option_all' => ' Select Region','hierarchical' => 1, 'name' => 'filter_job_listing_region','id' => 'filter_job_listing_region','class' => 'jobhunt-job-region-select','value_field' => 'term_id','orderby' => 'name', 'selected' => isset( $_GET['filter_job_listing_region'] ) ? front_clean( wp_unslash( $_GET['filter_job_listing_region'] ) ) : '' ) ); ?>
                                <?php else : ?>
                                    <div class="input-group">
                                        <input type="text" name="search_location" id="search_location" class="form-control" placeholder="<?php echo esc_attr( $args['location_placeholder_text'] ) ?>" aria-label="<?php echo esc_attr( $args['location_placeholder_text'] ) ?>" aria-describedby="locationInputAddon" value="<?php echo esc_attr( isset( $_GET['search_location'] ) ? front_clean( wp_unslash( $_GET['search_location'] ) ) : '' ); ?>" />
                                        <div class="input-group-append">
                                            <span class="input-group-text">
                                            <span class="fas fa-map-marker-alt" id="locationInputAddon"></span>
                                            </span>
                                        </div>
                                    </div>
                                <?php endif; ?>
                            </div>
                            <!-- End Input -->
                        </div>
                        <div class="search_category d-none col-lg-3 mb-4 mb-lg-0">
                            <!-- Input -->
                            <label for="search_category" class="d-block">
                                <span class="h4 d-block text-dark font-weight-semi-bold mb-0"><?php echo esc_html( $args['category_title_text'] ) ?></span>
                                <small class="d-block text-secondary">
                                    <?php echo esc_html( $args['category_subtitle_text'] ) ?>
                                </small>
                            </label>
                            <div class="js-focus-state">
                                <select id="search_category" name="search_category">
                                    <option value=""><?php echo esc_html( $args['category_placeholder_text'] ); ?></option>
                                    <?php foreach ( get_job_listing_categories() as $cat ) : ?>
                                    <option value="<?php echo esc_attr( $cat->term_id ); ?>" <?php echo esc_attr( isset( $_GET['search_category'] ) && front_clean( wp_unslash( $_GET['search_category'] ) ) == $cat->term_id ? 'selected' : ''); ?>><?php echo esc_html( $cat->name ); ?></option>
                                    <?php endforeach; ?>
                                </select>
                            </div>
                            <!-- End Input -->
                        </div>
                        <div class="search_submit col-lg-2 align-self-lg-end">
                            <button type="submit" class="btn btn-block btn-primary transition-3d-hover">
                                <?php echo esc_html( $search_button_text ); ?>
                            </button>
                        </div>
                        <input type="hidden" name="paged" value="1" />
                        <?php 
                        if( is_array( $current_page_query_args ) && !empty(  $current_page_query_args  ) ) :
                            foreach ( $current_page_query_args as $key => $current_page_query_arg ) :
                                if( $key != 'search_keywords' && $key != 'search_category' && $key != 'filter_job_listing_region'  ) :
                                    ?><input type="hidden" name="<?php echo esc_attr( $key ); ?>" value="<?php echo esc_attr( $current_page_query_arg ); ?>" ><?php
                                endif;
                            endforeach;
                        endif;
                        ?>

                        <?php do_action( 'job_manager_job_header_search_block_search_jobs_end' ); ?>
                    </div>
                    <?php do_action( 'job_manager_job_header_search_block_end' ); ?>
                    <!-- End Checkbox -->
                </form>
                <!-- End Search Jobs Form -->
            </div>
        </div>
        <?php
    }
}