Bird
0
0

What is the primary purpose of the PHP array_walk function?

easy📝 Conceptual Q1 of 15
PHP - Array Functions
What is the primary purpose of the PHP array_walk function?
ATo filter elements from an array based on a condition
BTo sort an array in ascending order
CTo merge two arrays into one
DTo apply a user-defined function to every element of an array
Step-by-Step Solution
Solution:
  1. Step 1: Understand the role of array_walk

    The function applies a callback to each element of the array, modifying or using each element.
  2. Step 2: Compare with other array functions

    Sorting, merging, and filtering are done by other functions like sort, array_merge, and array_filter.
  3. Final Answer:

    To apply a user-defined function to every element of an array -> Option D
  4. Quick Check:

    array_walk purpose = apply function [OK]
Quick Trick: array_walk applies a callback to each array element [OK]
Common Mistakes:
  • Confusing array_walk with sorting functions
  • Thinking array_walk merges arrays
  • Assuming array_walk filters elements

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More PHP Quizzes