Q
Which PHP function is used to print a human-readable representation of a variable?

Answer & Solution

Answer: Option B
Solution:
The print_r() function in PHP is used to print a human-readable representation of a variable, including its data type and contents. It is commonly used for debugging purposes to display the structure and contents of arrays, objects, and other complex data types.
Related Questions on Average

What does the var_export() function do in PHP?

A). Outputs or returns a parsable string representation of a variable

B). Prints a human-readable representation of a variable

C). Logs a message to a file

D). Redirects script output to a specified file

What is the primary benefit of using Xdebug for PHP debugging?

A). Advanced features like stack traces and profiling

B). Lightweight and easy to install

C). Integration with third-party IDEs

D). Cross-platform compatibility

How can you trigger a user-defined error in PHP?

A). By calling the trigger_error() function

B). By using the print() function

C). By setting a breakpoint in the code

D). By configuring PHP directives in php.ini

How does setting the log_errors directive to On affect PHP behavior?

A). It enables logging of errors to a file

B). It disables error reporting to the web page

C). It suppresses error messages

D). It increases script execution speed

Which PHP function is commonly used to log messages to a file?

A). echo()

B). print()

C). error_log()

D). log_message()

What is the primary purpose of using breakpoints in a debugger?

A). To pause script execution at specific points for analysis and inspection

B). To display error messages

C). To terminate script execution immediately

D). To hide certain lines of code from execution

How can you set breakpoints and inspect variable values in PHP code?

A). By using a debugger integrated with an IDE

B). By adding echo statements throughout the code

C). By setting environment variables

D). By configuring PHP directives in php.ini

How can you set the level of error reporting in PHP to display all types of errors?

A). error_reporting(E_ALL);

B). error_reporting(E_NOTICE);

C). error_reporting(E_ERROR);

D). error_reporting(E_WARNING);

How can you trigger a user-defined error in PHP?

A). By calling the trigger_error() function

B). By using the print() function

C). By setting a breakpoint in the code

D). By configuring PHP directives in php.ini

Which PHP directive controls whether errors are displayed on the web page?

A). error_reporting

B). display_errors

C). log_errors

D). error_log