The XML document below has been parsed into $xml via SimpleXMLHow can the value of <foo>
tag accessed?
<?xml version='1.0'?>
<document>
<bar>
<foo>Value</foo>
</bar>
</document>
                                
A.$xml->bar['foo']
B.$xml->bar->foo
C.$xml['document']['bar']['foo']
D.$xml->document->bar->foo
E.$xml->getElementByName('foo');
                              
Click To Show Ans:B
                        

                                
The following form is loaded in a recent browser and submitted, with the second list element
selected:
<form method="post">
<select name="list">
<option>one</option>
<option>two</option>
<option>three</option>
</select>
</form>
In the server-side PHP code to deal with the form data, what is the value of $_POST['list']?
                                
A.1
B.2
C.two
D.null (since the <code> value attribute of the list has not been set)
                              
Click To Show Ans:C
                        

                                
You are creating an application that repeatedly connects to a database to retrieve order data for
invoicesAll data comes from the same databaseIn order to preserve resources, you have to ensure that
only one database connection should be used at any timeThe code also has to open as few new
database connections as possibleWhich design pattern should you use for this scenario?
                                
A.Adapter
B.Factory
C.MVC
D.Singleton
                              
Click To Show Ans:D
                        

                                
Which of the following code snippets writes the content of the file "source.txt" to "target.txt"?(Choose
3)
                                
A.file_put_contents("target.txt", fopen("source.txt", "r"));
B.file_put_contents("target.txt", readfile("source.txt"));
C.file_put_contents("target.txt", join(file("source.txt"), ""));
D.file_put_contents("target.txt", file_get_contents("source.txt"));
E.$handle = fopen("target.txt", "w+"); fwrite($handle,
file_get_contents("source.txt")); fclose($handle);
                              
Click To Show Ans:A,D,E
                        

                                
Which of the following statements is NOT correct?
                                
A.Only methods can have type hints
B.Typehints can be optional
C.Typehints can be references
                              
Click To Show Ans:A