MYSQL_ݿ
˵
	ʹǰʵ
	$a = ʵ MYSQL_ݿ;
˵

MYSQL_ʼ
˵
	ʼ(ַ ,û ,)
	3
	ʧԶݿô󡱻ֱ˳ű

˵

MYSQL_١
˵
	()
	
˵

MYSQL_ִвѯ
˵
	ִвѯ($sql)
	
	ִ  sql   ɾ  ִɾ
	
	һ sql 뷵ؽ ǽԺ JSONJSONʽı
	
˵

MYSQL_ִɾ
˵
	ִɾ($sql)
	
	ִ  ɾ  SQL   ִвѯ

	ֵΪ  ΪӰ -1 ִʧ 0 ûܵӰ Ӱ˼
	.
˵

MYSQL_ѡݿ⡾
˵
	MYSQL_ѡݿ(ݿ)
	
	ֵΪ
	.
˵

MYSQL_ִ֧UTF8
˵
	MYSQL_ִ֧UTF8()
	
	ֵΪ
	.
˵