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PHP Manual
Swoole\Table
Check if a row is existed by $row_key.

Swoole\Table::exist

(PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0)

Swoole\Table::exist — Check if a row is existed by $row_key.

说明

public Swoole\Table::exist ( string $key ) : boolean

参数

key

返回值