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<?php



if (!function_exists('array_insert_before')) :

    function array_insert_before($key, array &$array, $new_key, $new_value) {

        if (array_key_exists($key, $array)) {

            $new = array();

            foreach ($array as $k => $value) {

                if ($k === $key) {

                    $new[$new_key] = $new_value;

                }

                $new[$k] = $value;

            }

            return $new;

        }

        return false;

    }

endif;



if (!function_exists('array_insert_after')) :

    function array_insert_after($key, &$array, $new_key, $new_value) {

        if (array_key_exists($key, $array)) {

            $new = array();

            foreach ($array as $k => $value) {

                $new[$k] = $value;

                if ($k === $key) {

                    $new[$new_key] = $new_value;

                }

            }

            return $new;

        }

        return false;

    }

endif;



if (!function_exists('porto_add_url_parameters')):

    function porto_add_url_parameters($url, $name, $value) {

        $url_data = parse_url(str_replace('#038;', '&', $url));

        if (!isset($url_data["query"]))

            $url_data["query"]="";



        $params = array();

        parse_str($url_data['query'], $params);

        $params[$name] = $value;

        $url_data['query'] = http_build_query($params);

        return porto_build_url($url_data);

    }

endif;



if (!function_exists('porto_remove_url_parameters')):

    function porto_remove_url_parameters($url, $name) {

        $url_data = parse_url(str_replace('#038;', '&', $url));

        if (!isset($url_data["query"]))

            $url_data["query"]="";



        $params = array();

        parse_str($url_data['query'], $params);

        $params[$name] = "";

        $url_data['query'] = http_build_query($params);

        return porto_build_url($url_data);

    }

endif;



if (!function_exists('porto_build_url')):

    function porto_build_url($url_data) {

        $url="";

        if (isset($url_data['host'])) {

            $url .= $url_data['scheme'] . '://';

            if (isset($url_data['user'])) {

                $url .= $url_data['user'];

                if (isset($url_data['pass']))

                    $url .= ':' . $url_data['pass'];

                $url .= '@';

            }

            $url .= $url_data['host'];

            if (isset($url_data['port']))

                $url .= ':' . $url_data['port'];

        }

        if (isset($url_data['path']))

            $url .= $url_data['path'];

        if (isset($url_data['query']))

            $url .= '?' . $url_data['query'];

        if (isset($url_data['fragment']))

            $url .= '#' . $url_data['fragment'];



        return str_replace('#038;', '&', $url);

    }

endif;



function porto_get_blank_image() {

    return 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==';

}



if (!function_exists('array2json')):

    function array2json($arr) {

        if(function_exists('json_encode')) return json_encode($arr); //Lastest versions of PHP already has this functionality.

        $parts = array();

        $is_list = false;



        //Find out if the given array is a numerical array

        $keys = array_keys($arr);

        $max_length = count($arr)-1;

        if(($keys[0] == 0) and ($keys[$max_length] == $max_length)) {//See if the first key is 0 and last key is length - 1

            $is_list = true;

            for($i=0; $i<count($keys); $i++) { //See if each key correspondes to its position

                if($i != $keys[$i]) { //A key fails at position check.

                    $is_list = false; //It is an associative array.

                    break;

                }

            }

        }



        foreach($arr as $key=>$value) {

            if(is_array($value)) { //Custom handling for arrays

                if($is_list) $parts[] = array2json($value); /* :RECURSION: */

                else $parts[] = '"' . $key . '":' . array2json($value); /* :RECURSION: */

            } else {

                $str = '';

                if(!$is_list) $str = '"' . $key . '":';



                //Custom handling for multiple data types

                if(is_numeric($value)) $str .= $value; //Numbers

                elseif($value === false) $str .= 'false'; //The booleans

                elseif($value === true) $str .= 'true';

                else $str .= '"' . addslashes($value) . '"'; //All other things



                $parts[] = $str;

            }

        }

        $json = implode(',',$parts);



        if($is_list) return '[' . $json . ']';//Return numerical JSON

        return '{' . $json . '}';//Return associative JSON

    }

endif;



function porto_generate_rand() {

    $validCharacters = 'abcdefghijklmnopqrstuvwxyz0123456789';

    $rand = '';

    $length = 32;

    for ($n = 1; $n < $length; $n++) {

        $whichCharacter = rand(0, strlen($validCharacters)-1);

        $rand .= $validCharacters[$whichCharacter];

    }



    return $rand;

}



if ( ! function_exists( 'porto_is_ajax' ) ) {

    function porto_is_ajax() {



        if ( defined( 'DOING_AJAX' ) ) {

            return true;

        }



        if (function_exists('mb_strtolower')) {

            return ( isset( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ] ) && mb_strtolower( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ] ) == 'xmlhttprequest' ) ? true : false;

        } else {

            return ( isset( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ] ) && strtolower( $_SERVER[ 'HTTP_X_REQUESTED_WITH' ] ) == 'xmlhttprequest' ) ? true : false;

        }

    }

}



function porto_stringify_attributes( $attributes ) {

    $atts = array();

    foreach ( $attributes as $name => $value ) {

        $atts[] = $name . '="' . esc_attr( $value ) . '"';

    }



    return implode( ' ', $atts );

}



function porto_has_class( $class, $classes ) {

    return in_array( $class, explode( ' ', strtolower( $classes ) ) );

}



function porto_strip_tags( $content ) {

    $content = str_replace( ']]>', ']]&gt;', $content );

    $content = preg_replace("/<script.*?\/script>/s", "", $content) ? : $content;

    $content = preg_replace("/<style.*?\/style>/s", "", $content) ? : $content;

    $content = strip_tags( $content );

    return $content;

}


/**
 * Modifies WordPress's built-in comments_popup_link() function to return a string instead of echo comment results
 */
function get_comments_popup_link( $zero = false, $one = false, $more = false, $css_class = '', $none = false ) {
    global $wpcommentspopupfile, $wpcommentsjavascript;
 
    $id = get_the_ID();
 
    if ( false === $zero ) $zero = __( 'No Comments' );
    if ( false === $one ) $one = __( '1 Comment' );
    if ( false === $more ) $more = __( '% Comments' );
    if ( false === $none ) $none = __( 'Comments Off' );
 
    $number = get_comments_number( $id );
 
    $str = '';
 
    if ( 0 == $number && !comments_open() && !pings_open() ) {
        $str = '<span' . ((!empty($css_class)) ? ' class="' . esc_attr( $css_class ) . '"' : '') . '>' . $none . '</span>';
        return $str;
    }
 
    if ( post_password_required() ) {
        $str = __('Enter your password to view comments.');
        return $str;
    }
 
    $str = '<a href="';
    if ( $wpcommentsjavascript ) {
        if ( empty( $wpcommentspopupfile ) )
            $home = home_url();
        else
            $home = get_option('siteurl');
        $str .= $home . '/' . $wpcommentspopupfile . '?comments_popup=' . $id;
        $str .= '" onclick="wpopen(this.href); return false"';
    } else { // if comments_popup_script() is not in the template, display simple comment link
        if ( 0 == $number )
            $str .= get_permalink() . '#respond';
        else
            $str .= get_comments_link();
        $str .= '"';
    }
 
    if ( !empty( $css_class ) ) {
        $str .= ' class="'.$css_class.'" ';
    }
    $title = the_title_attribute( array('echo' => 0 ) );
 
    $str .= apply_filters( 'comments_popup_link_attributes', '' );
 
    $str .= ' title="' . esc_attr( sprintf( __('Comment on %s'), $title ) ) . '">';
    $str .= get_comments_number_str( $zero, $one, $more );
    $str .= '</a>';
     
    return $str;
}
 
/**
 * Modifies WordPress's built-in comments_number() function to return string instead of echo
 */
function get_comments_number_str( $zero = false, $one = false, $more = false, $deprecated = '' ) {
    if ( !empty( $deprecated ) )
        _deprecated_argument( __FUNCTION__, '1.3' );
 
    $number = get_comments_number();
 
    if ( $number > 1 )
        $output = str_replace('%', number_format_i18n($number), ( false === $more ) ? __('% Comments') : $more);
    elseif ( $number == 0 )
        $output = ( false === $zero ) ? __('No Comments') : $zero;
    else // must be one
        $output = ( false === $one ) ? __('1 Comment') : $one;
 
    return apply_filters('comments_number', $output, $number);
}