Which of the following options may be a reason for the error - "Call to undefined function curl_init()"?

What is the output? '; $array1 = array( '1'=>'a', '2'=>'b', '3'=>'c' ); $array = array_flip($array1); print_r($array); echo ''; ?>

What will be the output ? #FFF#333Verdana, Geneva, sans-serif'; $xml = simplexml_load_string($xmlFile); foreach($xml->css as $css) { echo (string) $css->element['id'].'{'; foreach($xml->css->element->csstag as $tag) { $temp = $tag->title.': '.$tag->value.';'; echo $temp; } echo '}'; } ?>

When user clicks on Logout link, the user is redirected to logout.php file and the file has following code? What is wrong with the following code?

Which is false about foreach loop in PHP?

Best way to get the index(es) of the highest value(s) in an array?

Correct usage of the chmod() function?

PHP variable $hello is set to 'HELLO WORLD'. Which statement would return 'Hello World' instead?

class A{} class_alias( 'A', 'B' ); var_dump(new B); outputs ...

Correct way to assign a class constant?

Which PHP function checks a month, day, and year number to determine if they form a valid Gregorian date?