WordPress 安全过滤数组 内容

WordPress在日常主题插件开发中，保存内容时需要使用 sanitize_text_field 函数来保证数据的安全。

Clean everything, check everything, escape everything, and never trust the users to always have input sane data. After all, users come from all walks of life.

• https://developer.wordpress.org/plugins/security/securing-input/
• https://developer.wordpress.org/plugins/security/securing-output/

但是当我们需要保存一个数组时，比如多个input框，使用同一个name时，就需要用到。这里我们写一个具体的函数

function sanitize_text_or_array_field($array_or_string)
	{
		if (is_string($array_or_string)) {
			$array_or_string = sanitize_text_field($array_or_string);
		} elseif (is_array($array_or_string)) {
			foreach ($array_or_string as $key => &$value) {
				if (is_array($value)) {
					$value = $this->sanitize_text_or_array_field($value);
				} else {
					$value = sanitize_text_field($value);
				}
			}
		}

		return $array_or_string;
	}