PHP - Functions
How can you pass an argument by reference to a PHP function so that changes inside affect the original variable?
How can you pass an argument by reference to a PHP function so that changes inside affect the original variable?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand passing by reference
Passing by reference means the function can modify the original variable.Step 2: Identify PHP syntax for reference
In PHP, prefixing the parameter with & in the function definition allows passing by reference.Final Answer:
Prefix the parameter with & in the function definition -> Option AQuick Check:
Reference passing = & before parameter [OK]
Quick Trick: Use & before parameter to pass by reference [OK]
Common Mistakes:
- Using global instead of reference
- Passing by value expecting changes
- Confusing static with reference
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