The Full Stack Web Development - Helpful Functions For Debugging

The video tutorial covers various debugging techniques in PHP, starting with the use of ECHO to display variable values. It then explains how to use print_r to output array contents and var_dump to reveal variable types and values. The tutorial also demonstrates creating arrays with mixed data types and using var_dump to inspect them. Additionally, it shows how to implement console.log functionality in PHP for debugging purposes. Finally, the video introduces the debug_backtrace function to generate PHP backtraces, providing insights into the code execution path.

What is the primary purpose of using the ECHO statement in PHP?

• To handle errors

• To execute a loop

• To display the value of a variable

• To define a function

Which function is used to display the structure and values of an array in PHP?

• echo

• print_r

• array_display

• var_dump

What additional information does var_dump provide compared to print_r?

• The type and value of variables

• Only the values of variables

• The number of functions in the script

• The length of the script

Which data type is NOT mentioned in the array example created in the video?

• Float

• Object

• Boolean

• Integer

What is the purpose of the custom console_log function in PHP?

• To execute PHP code in the browser

• To log data to the JavaScript console

• To create a new PHP class

• To handle PHP errors

What does the debug_backtrace function return?

• The total execution time of the script

• An array of associative arrays with function call details

• The number of lines in the script

• A list of all variables

Which of the following details is NOT provided by debug_backtrace?

• File name

• Variable values

• Line number

• Function name