Are there any potential pitfalls when using the "contains" function in PHP, and how can they be avoided?

When using the "contains" function in PHP, one potential pitfall is that it is case-sensitive. To avoid this issue, you can use the "stripos" function instead, which performs a case-insensitive search. 

$string = "Hello World";
$substring = "hello";

if (stripos($string, $substring) !== false) {
    echo "Substring found!";
} else {
    echo "Substring not found!";
}

Keywords

contains PHP function pitfalls avoid

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