解决Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead

因为最近更新的PHP版本，写sql语句，忽然发现不能用了，上网查了一些原因，找到几个方法如下：

1.禁止php报错

　　display_errors = on 改成 display_errors = off

2.将PHP中的mysql用PDO或者是mysqli代替就不会发生这种情况了

3.php设置报警级别

　　 error_reporting(E_ALL ^ E_DEPRECATED);

解决Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead

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