phponlinetutorial

file_exists not working php file_exits doesn't support remote URLs. php file functions: if  php file_exits not working. we can try this one  if (fopen($fileexitesnotworking, "r")){ echo "file exits" }else { echo "not"; }

how to check if user is login are not in drupal Ans: if (user_is_logged_in()) { // Do something. }    are global $user;    if($user->uid!=0){    echo "Logged In";    }    else{    echo "Not logged in";    }

how to get the user role in drupal Ans: <?php $GLOBALS['user']->roles; ?>

how to i get the current drupal themes path? global $theme; $path = drupal_get_path('theme', $theme); // there's also a $theme_path global global $theme_path;

drupal folder structure explained /includes: Drupal api files are include here.   /database   /mysql   /pgsql   /sqlite   /filetransfer /misc :javascript file and images here.   /farbtastic   /ui   /images /modules : Drupal core modules here. /profiles : installation profiles here   /minimal   /standard   /testing /scripts : shell scripts for developers and administrators here. /sites : all files that are added by a developer to create a site here.   /all      /modules      /themes  /default /themes:  php files: authorize.php cron.php index.php install.php update.php xmlrpc.php htaccess text files: web upgrade robots readme maintainers licenes install

what is an array? Ans: An array stores multiple values in one single variable how to get the first value of an array in php Ans:current() also works on objects: <?php   echo current((object) array('one', 'two')); // Outputs: one ?> And echo reset($arr); $firstValue = each($array)[1]; how to get the last value of an array in php Ans: echo end($array); 3.adding an element in beginning of array Ans: $queue = array("orange", "banana"); array_unshift($queue, "apple", "raspberry"); 4.Insert "elements" to the end of an array Ans: $a=array("red","green"); array_push($a,"blue","yellow"); 5. how to delete the last element of an array in php Ans: $stack = array("orange", "banana", "apple", "raspberry"); $fruit = array_pop($stack); 6. how to delete the first element of an array in php Ans: $stack = array(...

php interview questions and answers for two year experienced 1Q:  What is the difference between the functions unlink and unset? Ans: unlink() deletes the given file from the file system.      unset() makes a variable undefined. 2Q:  How many ways we can pass the variable through the navigation between the pages? Ans: GET, QueryString, POST 3Q:  How can we know the count/number of elements of an array? Ans:  2 ways      a) sizeof($urarray) This function is an alias of count()      b) count($urarray) 4Q:  How can we convert the time zones using PHP? Ans: date_default_timezone_set('Asia/Tokyo'); 5Q:  How many ways can we get the value of current session id? Ans: session_id() returns the session id for the current session. 6Q:   How can we destroy the session, how can we unset the variable of       a session? Ans:  session_unregister — Unregister a global vari...