php - 正则表达式强制字母数字但允许撇号和连字符？

Question

我将如何更改此函数以使其允许单个撇号和连字符:

function sanitize_string($s) {
    $result = preg_replace("/[^a-zA-Z0-9]+/", " ", html_entity_decode($s, ENT_QUOTES));
    return $result;
}

Answer 1

只需在范围末尾包含单个撇号和连字符:

function sanitize_string($s) {
    $result = preg_replace("/[^a-zA-Z0-9'-]+/", " ", html_entity_decode($s, ENT_QUOTES));
    return $result;
}