How to implement Redis Hash operation in php
Hash operation
//为hash表中的字段赋值。成功返回1,失败返回0。若hash表不存在会先创建表再赋值,若字段已存在会覆盖旧值。 $ret = $redis->hSet('user', 'realname', 'jetwu'); //获取hash表中指定字段的值。若hash表不存在则返回false。 $ret = $redis->hGet('user', 'realname'); //查看hash表的某个字段是否存在,存在返回true,否则返回false。 $ret = $redis->hExists('user', 'realname'); //删除hash表的一个字段,不支持删除多个字段。成功返回1,否则返回0。 $ret = $redis->hDel('user', 'realname'); //同时设置某个hash表的多个字段值。成功返回true。 $ret = $redis->hMset('user', ['name' => 'jet', 'age' => 18]); //同时获取某个hash表的多个字段值。其中不存在的字段值为false。 $ret = $redis->hMget('user', ['name', 'age']); //获取某个hash表所有的字段和值。 $ret = $redis->hGetAll('user'); //获取某个hash表所有字段名。hash表不存在时返回空数组,key不为hash表时返回false。 $ret = $redis->hKeys('user'); //获取某个hash表所有字段值。 $ret = $redis->hVals('user'); //为hash表中不存在的字段赋值。若hash表不存在则先创建,若字段已存在则不做任何操作。设置成功返回true,否则返回false。 $ret = $redis->hSetNx('user', 'realname', 'jetwu'); //获取某个hash表的字段数量。若hash表不存在返回0,若key不为hash表则返回false。 $ret = $redis->hLen('user'); //为hash表中的指定字段加上指定增量值,若增量值为负数则相当于减法操作。若hash表不存在则先创建,若字段不存在则先初始化值为0再进行操作,若字段值为字符串则返回false。设置成功返回字段新值。 $ret = $redis->hIncrBy('user', 'age', 10); //为hash表中的指定字段加上指定浮点数增量值。 $ret = $redis->hIncrBy('user', 'age', 1.5);
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