使用php比较字符串的一部分

Question

I want to check whether the search keyword 'cli' or 'ent' or 'cl' word exists in the string 'client' and case insensitive. I used the preg_match function with the pattern '\\bclient\\b'. but it is not showing the correct result. Match not found error getting.

Please anyone help

Thanks

Answer 1

I wouldn't use regular expressions for this, it's extra overhead and complexity where a regular string function would suffice. Why not go with stripos() instead?

$str = 'client';
$terms = array('cli','ent','cl');
foreach($terms as $t) {
    if (stripos($str,$t) !== false) {
        echo "$t exists in $str";
        break;
    }
}

Answer 2

Try the pattern /cli?|ent/

Explanation:

cli matches the first part. The i? makes the i optional in the search.

| means or, and that matches cli , or ent .

Answer 3

\\b是单词边界，它与client中的cli不匹配，您需要删除\\b