How can the use of strtolower() function help in resolving case insensitivity issues in PHP code?

When dealing with case insensitivity issues in PHP code, the use of the strtolower() function can help by converting all characters in a string to lowercase. This ensures that comparisons between strings are not affected by differences in case, making the code more robust and accurate. 

$string1 = "Hello";
$string2 = "hello";

if(strtolower($string1) === strtolower($string2)) {
    echo "The strings are equal.";
} else {
    echo "The strings are not equal.";
}

Keywords

strtolower case insensitivity PHP function code

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