Debugging in PHP

1.		What is the difference between the var_dump() and print_r() functions in PHP?

There is no difference, they are synonyms

var_dump() displays the type and value of a variable, print_r() only displays the value

print_r() displays the type and value of a variable, var_dump() only displays the value

None of the above

2.		What is the purpose of the function set_time_limit() in PHP?

To turn off error reporting

To set the maximum execution time for a script

To display all errors

To stop the execution of the script on an error

3.		What does the function trigger_error() do in PHP?

Triggers a runtime error

Triggers a syntax error

Triggers a logical error

None of the above

4.		What does the function debug_print_backtrace() do in PHP?

Displays the current stack trace

Displays the current error message

Displays a list of all variables in the current scope

None of the above

5.		What is the purpose of the function debug_backtrace() in PHP?

To display a list of all variables in the current scope

To display the current error message

To display the current stack trace

None of the above

6.		Which of the following is NOT a type of error that can occur in PHP code?

Syntax errors

Runtime errors

Logical errors

None of the above

7.		What is the difference between the die() and exit() functions in PHP?

There is no difference, they are synonyms

die() displays an error message and exits the script, exit() does not display an error message

exit() displays an error message and exits the script, die() does not display an error message

None of the above

8.		What is the purpose of the function error_reporting() in PHP?

To turn off error reporting

To set the level of error reporting

To display all errors

To log errors to a file or database

9.		What is the purpose of the function ini_set() in PHP?

To set the value of a configuration option

To turn off error reporting

To display all errors

To stop the execution of the script on an error

10.		What is the purpose of the error_reporting() function in PHP?

To turn off error reporting

To set the level of error reporting

To display all errors

To stop the execution of the script on an error