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What is the main purpose of the array_reduce function in PHP?

easy📝 Conceptual Q1 of 15
PHP - Array Functions
What is the main purpose of the array_reduce function in PHP?
ATo sort an array in ascending order
BTo filter elements from an array based on a condition
CTo reduce an array to a single value using a callback function
DTo merge two or more arrays into one
Step-by-Step Solution
Solution:
  1. Step 1: Understand the role of array_reduce

    The function applies a callback to each element of the array, accumulating a single result.
  2. Step 2: Compare with other array functions

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

    To reduce an array to a single value using a callback function -> Option C
  4. Quick Check:

    array_reduce purpose = reduce array to single value [OK]
Quick Trick: array_reduce combines array elements into one value [OK]
Common Mistakes:
  • Confusing array_reduce with sorting functions
  • Thinking it filters elements instead of reducing
  • Assuming it merges arrays

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