Which of the following is the correct syntax to compare the first 4 characters of two strings case-insensitively in PHP?

easy📝 Syntax Q3 of 15

PHP - String Functions

Astrncmp($str1, $str2, 4);

Bstrncasecmp($str1, $str2, 4);

Csubstr_compare($str1, $str2, 0, 4);

Dstrcasecmp($str1, $str2);

Step-by-Step Solution

Solution:

Step 1: Understand function parameters
strncasecmp() compares first n characters ignoring case; here n=4.
Step 2: Check other options
strncmp() is case-sensitive, substr_compare() is case-sensitive by default, strcasecmp() compares full strings.
Final Answer:
strncasecmp($str1, $str2, 4); -> Option B
Quick Check:
Case-insensitive first 4 chars = strncasecmp() [OK]

Quick Trick: Use strncasecmp() for case-insensitive partial string compare [OK]

Common Mistakes:

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