transients_functions.php

<?php

/**
 * @author Mohammad Mursaleen
 * @usage function to get unique transient key
 * @return string: transient key
 */
function objects_get_transient_identifier( $key = '' ){

    return $key . '_' . objects_get_ip_address();

}

/**
 * @author Mohammad Mursaleen
 * @usage function to get ip of current user
 * @return string: ip
 */
function mm_get_ip_address(){

    foreach (array('HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key){
        if (array_key_exists($key, $_SERVER) === true){
            foreach (explode(',', $_SERVER[$key]) as $ip){
                $ip = trim($ip); // just to be safe

                if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false){
                    return $ip;
                }
            }
        }
    }

}

/**
 * @author Mohammad Mursaleen
 * @usage function to get transient value by key
 * @param string $page
 */
function mm_get_transient( $key = '' ){

    $transient = mm_get_transient_identifier( $key );

    $value = get_transient( $transient );

    if( !empty($value) ){

        return $value;

    } else {

        return false;

    }

}

/**
 * @author Mohammad Mursaleen
 * @usage function to set transient value by key, value and duration
 */
function mm_set_transient( $key = '' , $value = '' , $duration = HOUR_IN_SECONDS ){

    $transient = mm_get_transient_identifier( $key );

    set_transient( $transient, $value , $duration );

}

/**
 * @author Mohammad Mursaleen
 * @usage function to delete transient value by key
 */
function mm_delete_transient( $key = '' ){

    $transient = mm_get_transient_identifier( $key );

    delete_transient( $transient );

}