Which of the following commands will append data to an existing file?
                                
A.file_put_contents("file", "data", "a");
B.file_put_contents("file", "a", "data");
C.file_put_contents("file", "data", FILE_APPEND);
D.file_put_contents("file", "a", NULL, FILE_APPEND);
                              
Click To Show Ans:C
                        

                                
Which PHP function retrieves a list of HTTP headers that have been sent as part of the HTTP
response or are ready to be sent?
                                
A.header()
B.headers()
C.headers_list()
D.headers_sent()
                              
Click To Show Ans:C
                        

                                
What is the return value of the following code?
strpos("me myself and I", "m", 2)
                                
A.2
B.3
C.4
D.0
E.1
                              
Click To Show Ans:B
                        

                                
How can the id attribute of the 2nd baz element from the XML string below be retrieved from the
SimpleXML object found inside $xml?
<?xml version='1.0'?>
<foo>
<bar>
<baz id="1">One</baz>
<baz id="2">Two</baz>
</bar>
</foo>
                                
A.$xml->getElementById('2');
B.$xml->foo->bar->baz[2]['id']
C.$xml->foo->baz[2]['id']
D.$xml->foo->bar->baz[1]['id']
E.$xml->bar->baz[1]['id']
                              
Click To Show Ans:E
                        

                                
What is the output of the following script?
<?php
function fibonacci (&$x1 = 0, &$x2 = 1)
 {
  $result = $x1 + $x2;
  $x1 = $x2;
  $x2 = $result;

 return $result;
 }

 for ($i = 0; $i < 10; $i++) {
  echo fibonacci() ',';
  }
?>
                                
A.An error
B.1,1,1,1,1,1,1,1,1,1,
C.1,1,2,3,5,8,13,21,34,55,
D.Nothing
                              
Click To Show Ans:B