PHP7.0連接DB操作實例分析【基于mysqli】

?php
//連接數(shù)據(jù)庫
$link = mysqli_connect('localhost', 'root', 'root','test');
mysqli_query($link,"set names gbk");//設(shè)置數(shù)據(jù)庫編碼
$result=mysqli_query($link,"select * from zhang where Name='a'");
// mysqli_fetch_array只會打印一條符合條件的 以數(shù)字為索引 var_dump($row);
// mysqli_fetch_assoc 只取出一條的 以屬性為索引
// mysqli_fetch_all 取出所有的 var_dump($row[0]['name']); 會進行遍歷foreach即可
//
// MYSQLI_NUM  以數(shù)字作為索引
// MYSQLI_ASSOC 以屬性作為索引
if($row=mysqli_fetch_all($result,MYSQLI_NUM)){
    foreach ($row as $key => $value) {
        var_dump($value[0]);
        echo "br>";
    }
}else{
     echo "false";
}
mysqli_close($link);

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for zhang
-- ----------------------------
DROP TABLE IF EXISTS `zhang`;
CREATE TABLE `zhang` (
 `name` varchar(255) DEFAULT NULL,
 `tel` varchar(255) DEFAULT NULL,
 `content` varchar(255) DEFAULT NULL,
 `date` datetime DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
-- ----------------------------
-- Records of zhang
-- ----------------------------
INSERT INTO `zhang` VALUES ('a', '11111111111', 'ac', '2019-04-02 16:36:16');
INSERT INTO `zhang` VALUES ('a', '22222222222', 'ac', '2019-04-20 16:36:50');
INSERT INTO `zhang` VALUES ('b', '33333333333', 'bc', '2019-04-19 16:37:12');