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                ## instance - 綁定canal的instance ~~~ use api\Canal; // 綁定canal中的instance,請先保證已經創建好對應的instance Canal::instance('demo'); ~~~ ## filter - 設置需要過濾的條件 不設置則監聽所有數據庫的所有的表變化 ~~~ use api\Canal; // 監聽數據庫 db1下的所有數據表 Canal::filter([ 'db1' => '*' ]); // 監聽db1下的以demo開頭的數據表 Canal::filter([ 'db1' => [ 'demo_*' ] ]); // 監聽db1下的 demo_1和demo_2兩個表 Canal::filter([ 'db1' => [ 'demo_1', 'demo_2' ] ]); ~~~ ## watch - 開始監聽 注入數據庫變化的具體內容作為參數傳遞進回調方法 ~~~ use api\Canal; Canal::watch(function($data){ print_r($data); }); ~~~ ## 完整示例 演示監聽數據庫“db1”中的所有表的數據變化 ~~~ use api\Canal; Canal::instance('demo')->filter([ 'db1' => '*' ])->watch(function($data){ print_r($data); }); ~~~ 命令行運行該控制器,此時數據庫中的任意表發生數據變化時,將觸發watch中的回調
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