Php/docs/mongodb-bson-regex.construct

• PHP Manual
• MongoDB\BSON\Regex
• Construct a new Regex

MongoDB\BSON\Regex::__construct

(mongodb >=1.0.0)

MongoDB\BSON\Regex::__construct — Construct a new Regex

说明

final public MongoDB\BSON\Regex::__construct ( string $pattern [, string $flags = "" ] )

参数

pattern (string)

The regular expression pattern.

Note:

The pattern should not be wrapped with delimiter characters.

flags (string)

The [https://docs.mongodb.com/manual/reference/operator/query/regex/#op._S_options » regular expression flags]. Characters in this argument will be sorted alphabetically.

错误／异常

• Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
• Throws MongoDB\Driver\Exception\InvalidArgumentException if pattern or flags contain null bytes.

更新日志

版本	说明
PECL mongodb 1.2.0	The flags argument is optional and defaults to an empty string. Characters in the flags argument will be sorted alphabetically when a Regex is constructed. Previously, the characters were stored in the order provided. MongoDB\Driver\Exception\InvalidArgumentException is thrown if pattern or flags contain null bytes. Previously, values would be truncated at the first null byte.

范例

Example #1 MongoDB\BSON\Regex::__construct() example

<?php$regex = new MongoDB\BSON\Regex('^foo', 'i');var_dump($regex);?>

以上例程会输出：

object(MongoDB\BSON\Regex)#1 (2) {
  ["pattern"]=>
  string(4) "^foo"
  ["flags"]=>
  string(1) "i"
}

参见

• » BSON Types
• » Supported regular expression flags