Which version of PHP introduced the visibility keywords i.e public, private, and protected?

The visibility of a property or method can be defined by prefixing the declaration with the keywords public, protected or private. Class members declared public can be accessed everywhere. Members declared protected can be accessed only within the class itself and by inherited classes. Members declared as private are not accessible.

A

True

B

False

The developers of PHP deprecated the safe mode feature as of which PHP version.

A

PHP 5.1.0

B

PHP 5.2.0

C

PHP 5.3.0

D

PHP 5.3.1

Suppose a class has public visibility. In this class we define a protected method. Which of the following statements is correct?

A

This method is only accessible from inside the class itself and from inside all subclasses.

B

In a class, you cannot declare methods with a lower visibility than the visibility of the class in which it is defined.

C

From within protected methods you do not have access to public methods.

D

This method is accessible from within the class itself and from within all classes defined in the same package as the class itself.

Which version of PHP introduced the advanced concepts of OOP?

A

PHP 6

B

PHP 4

C

PHP 5

D

PHP 5.3

Which version of PHP introduced Try/catch Exception?

A

PHP 4

B

PHP 5

C

PHP 6

D

PHP 5 and later

Which version of PHP introduced the instanceof keyword?

A

PHP 4

B

PHP 5

C

PHP 5.3

Which version of PHP introduced E_STRICT Error level?

A

PHP 4

B

PHP 5

C

PHP 5.2

D

PHP 5.3

In which version of PHP was MySQL Native Driver(also known as mysqlnd) introduced?

A

PHP 5.0

B

PHP 5.1

Which version of PHP introduced class type hints?

A

PHP 4

B

PHP 4.3

C

PHP 5

D

PHP 5.3

Which version of PHP introduced the static keyword?

A

PHP 4

B

PHP 5

C

PHP 5.2

D

PHP 5.3

Which version of PHP introduced the visibility keywords i.e public, private, and protected?

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