PHP - String Functions
Which PHP function converts all letters in a string to uppercase?
$text = "hello world";Which PHP function converts all letters in a string to uppercase?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the function purpose
strtoupper()converts all characters in a string to uppercase letters.Step 2: Compare with other functions
strtolower()makes all letters lowercase,ucfirst()capitalizes only the first letter, anducwords()capitalizes the first letter of each word.Final Answer:
strtoupper() -> Option AQuick Check:
Uppercase function = strtoupper() [OK]
Quick Trick: All uppercase letters? Use strtoupper() [OK]
Common Mistakes:
- Confusing strtoupper() with strtolower()
- Using ucfirst() to uppercase whole string
- Using ucwords() for full uppercase
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