What are the best practices for ensuring accurate string comparisons in PHP?

When comparing strings in PHP, it is important to ensure that the comparison is case-insensitive and that any leading or trailing white spaces are removed. To achieve accurate string comparisons, you can use the `strcasecmp()` function for case-insensitive comparison and `trim()` function to remove any white spaces. 

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

if (strcasecmp(trim($string1), trim($string2)) === 0) {
    echo "Strings are equal";
} else {
    echo "Strings are not equal";
}

Keywords

string comparison PHP strcmp mb_strtolower collation

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