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html:

<!DOCTYPE html>

<html>

<head>

<?php header("content-type :text/html;charset=utf-8");?>

</head>

<body>

??: <input type="text" name="name" id="name"/>

</form>

? ? ? ? var ?? =document.getElementById('name').value;

$("#btn").on("click", function () {

$.ajax({

??: "POST",

url: "PDO_insert.php",//url放的是當(dāng)前頁面請求的后臺地址。

data:{name:name},

async:false,

dataType: "json",?

??: ??(???) {

var result=data;

//var result = eval('[' + data + ']');

Alert(result);

??: ?? () {

Alert("請求失敗!");

}

});

</script>

</body>

</html>

<?php?

$host = 'localhost' ;

$ ?????? = '???';

$username = '??';

$password = '??';

$selectName = $_POST['name'];

$pdo = ? PDO("mysql: ???=$host;dbname=$database", $username, $password);//創(chuàng)建一個pdo對象

$pdo->exec("?? ?? 'utf8'");//設(shè)置數(shù)據(jù)庫編碼

$ sql = "?? = ?? ????? * ??";

//$sql = "????? * ??";

$stmt = $pdo->prepare($sql);

$rs = $stmt ->execute(array($selectName));

if ($rs){

// PDO::FETCH_ASSOC 關(guān)聯(lián)數(shù)組TYPE式

// PDO::FETCH_NUM 數(shù)字索引數(shù)組shape式

?? ( $row = $stmt->fetch(PDO::FETCH_ASSOC)) {

?? $name,$age;

$name = $row['name'];

$age = $row['age' ];

}

$data='{name:"'.$name.'",age:"'.$age.'"}';

echo json_encode($data);? ?//打印?:"{??:"1",??:"1"}"

為什么每次獲取的文是前一次查詢的數(shù)據(jù)?