When using PDO in PHP, which method is typically used to execute a prepared statement?
- execute()
- query()
- fetch()
- prepare()
In PDO (PHP Data Objects), the 'execute()' method is typically used to execute a prepared statement. It is used after preparing the statement with 'prepare()' to execute the query.
Which control structure is best suited for executing a block of code multiple times based on a condition?
- if statement
- for loop
- switch statement
- while loop
A 'for' loop is ideal for executing code repeatedly based on a condition, typically with an initialization, condition, and increment expression.
In PHP, the session data is serialized using the ________ mechanism.
- Object-Oriented
- Session-Cookie
- Serialize-Deserialize
- URL Rewriting
The correct option is "Serialize-Deserialize" mechanism. PHP uses serialization to store session data as a serialized string.
When a form is submitted, the actual method used for sending data can be found in the PHP superglobal called ________.
- $_SERVER
- $_REQUEST
- $_POST
- $_METHOD
The method used for sending data when a form is submitted can be found in the PHP superglobal $_POST.
In PHP, the namespace separator is represented by ________.
- .
- :
- ;
In PHP, the backslash () is used as the namespace separator. It's used to separate namespaces and access classes and functions within namespaces.
The practice of writing code that anticipates and gracefully handles potential issues is known as ________.
- Exception Handling
- Defensive Programming
- Code Optimization
- Bug Avoidance
Defensive Programming involves proactively addressing potential issues in code, making it more robust and error-resistant.
How can you prevent the display of PHP errors on a production website while still logging them?
- Set display_errors to Off in PHP configuration
- Use error_reporting(E_ALL) to suppress error display, while configuring a custom error handler for logging
- Enable error_reporting(E_ALL) to display errors only for the admin
- Use PHP's debug_backtrace() to hide errors from public view, while logging them
To prevent the display of PHP errors on a production website while logging them, you should configure a custom error handler to log errors and set display_errors to Off in the PHP configuration.
In a typical CRUD operation, what does the "U" stand for?
- Update
- Utilize
- Understand
- Unify
In a typical CRUD (Create, Read, Update, Delete) operation, "U" stands for "Update." It signifies the process of modifying existing data in a database or system.
In PHP, what is the difference between the '==' and '===' operators?
- '==' performs loose comparison
- '===' performs strict comparison
- '==' checks only value equality
- '===' checks value and type equality
'==' checks if the values are equal, while '===' checks both the values and data types. '===' is stricter and will return true only if both the value and data type match. '==' is more permissive.
To handle exceptions in PHP, you should wrap the risky code within a ________ block.
- try
- catch
- throw
- finally
In PHP, you should wrap the risky code within a 'try' block. The 'try' block is used to enclose the code that may throw an exception.