200-710 Zend Certified Engineer Questions and Answers

hello world

hello $world

PHP Parser error

the database will return no rows.

The value of $row will be an array.

The value of $result will be empty.

The value of $result will be ‘gamma@example.net’.

Multiple traits can be used by a single class

A trait can implement an interface

A trait can declare a private variable.

Traits are able to be auto-loaded.

Traits automatically resolve conflicts based on definition order.

Reduces the connection & authentication overhead of connecting to the database

Ensures that only a single connection is open to the database from PHP

Allows connection settings such as character set encoding to persist

Allows for resumption of transactions across multiple requests.

htmlentities()

addslashes()

stripslashes()

strip_tags()

htmlspecialchars()

Reflection is an extension that can be disabled

Reflection is a new extension present only in PHP 7.0+

Reflection only allows to reflect on built-in classes

Built-in classes can be reflected on command line using php --rc

Use classes to encapsulate code and represent objects, and namespaces to avoid symbol name collisions

Use classes for performance-sensitive code, and namespaces when readability matters more

Use namespaces for performance-sensitive code, and classes when readability matters more

Always use them; namespaces as always superior to classes

There is no difference in functionality

strcmp() returns a Boolean value, the spaceship operator a number

strcmp() does a case-intensive comparison, the spaceship operator does not

The spaceship operator returns -1, 0 or 1; strcmp() may return any integer