PHP - Array Functions
Which of the following PHP code snippets correctly extracts all keys from the array
$data?Which of the following PHP code snippets correctly extracts all keys from the array $data?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the function purpose
array_keys()returns all keys from an array, whilearray_values()returns values.Step 2: Identify correct syntax
The correct syntax to extract keys isarray_keys($data).Final Answer:
$keys = array_keys($data); -> Option CQuick Check:
Verify function names and their purposes in PHP docs [OK]
Quick Trick: array_keys() extracts keys, array_values() extracts values [OK]
Common Mistakes:
- Confusing array_keys() with array_values()
- Using non-existent functions like keys() or get_keys()
- Incorrect function syntax or missing parentheses
Master "Array Functions" in PHP
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