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PHP date()格式MySQL中插入datetime方法

更新時間：2019年01月29日 14:41:52 投稿：laozhang

在本篇文章里小編給大家分享了關(guān)于PHP date()格式MySQL中插入datetime方法，有需要的朋友們學(xué)習(xí)下。

當(dāng)使用PHP在MySQL中編寫查詢時，它的適用性將基于MySQL本身進行檢查。所以使用MySQL提供的默認日期和時間格式，即'YYYY-MM-DD'

例子：

ATE: YYYY-MM-DD
Example: 2019-01-28
 
DATETIME: YYYY-MM-DD HH:MI:SS
Example: 2019-01-28 23:50:30
 
TIMESTAMP: YYYY-MM-DD HH:MI:SS
Example: 2019-01-28 23:50:30
 
YEAR: YYYY or YY

用于創(chuàng)建DataBase的MySQL查詢：

CREATE DATABASE Date_time_example;

示例1：用于創(chuàng)建數(shù)據(jù)庫和表的PHP程序

<?php 
  
$servername = "localhost"; 
$username = "root"; 
$password = ""; 
$dbname = "test"; 
  
// 創(chuàng)建連接
$conn = mysqli_connect( $servername, $username, $password, $dbname ); 
  
// 檢查連接 
if ( !$conn ) { 
  die("Connection failed: " . mysqli_connect_error()); 
} 
  
// 創(chuàng)建表的SQL查詢 
$sql = "CREATE TABLE date_test ( 
  id INT AUTO_INCREMENT PRIMARY KEY, 
  created_at DATETIME 
)"; 
  
if (mysqli_query($conn, $sql)) { 
  echo "Table date_test created successfully"; 
} else { 
  echo "Error creating table: " . mysqli_error($conn); 
} 
  
// 關(guān)閉連接
mysqli_close($conn);

輸出：

Table date_test created successfully

示例2：將日期插入表中的PHP程序。

<?php 
  
$servername = "localhost"; 
$username = "root"; 
$password = ""; 
$dbname = "test"; 
  
// 創(chuàng)建連接 
$conn = mysqli_connect( $servername, $username, $password, $dbname ); 
  
// 檢查連接
if ( !$conn ) { 
  die("Connection failed: " . mysqli_connect_error()); 
} 
  
// 用于向表中插入數(shù)據(jù)的SQL查詢 
$sql = "INSERT INTO date_test( created_at ) 
    VALUES( '2019-01-28 12:39:16' );"; 
  
if (mysqli_query($conn, $sql)) { 
  echo "New record created successfully"; 
} else { 
  echo "Error: " . $sql . "<br>" . mysqli_error($conn); 
} 
  
// 關(guān)閉連接
mysqli_close($conn);

輸出：

New record created successfully

示例3：此示例用于顯示在2019-01-28上創(chuàng)建的行。使用以下查詢顯示結(jié)果。created_at列不僅包含日期，還包含時間。所以它會顯示錯誤信息。

SELECT * FROM date_test WHERE DATE( created_at ) = '2019-01-28';

<?php 
  
$servername = "localhost"; 
$username = "root"; 
$password = ""; 
$dbname = "test"; 
  
//創(chuàng)建連接 
$conn = mysqli_connect( $servername, $username, $password, $dbname ); 
  
// 檢查連接
if ( !$conn ) { 
  die("Connection failed: " . mysqli_connect_error()); 
} 
  
//SQL查詢 
$sql = "SELECT * FROM date_test 
WHERE DATE(created_at) = '2019-01-28'"; 
  
$result = mysqli_query( $conn, $sql ); 
  
if ($result) { 
  echo $result; //打印查詢結(jié)果 
} 
else { 
  echo "Error: " . $sql . "<br>" . mysqli_error($conn); 
} 
  
// 關(guān)閉連接
mysqli_close($conn);

輸出：