Question

我有以下PHP v.5.6.29

<?php
// Connect to the database
include_once("php_includes/db_connect.php");

error_reporting(E_ALL); 
ini_set("display_errors", 1);

// Gather the posted data into local variables
$m = $_POST['MRN'];
$l = $_POST['LastName'];
$f = $_POST['FirstName'];
$s = $_POST['SSN'];

// Get user IP Address
$ip = preg_replace('#[^0-9.]#', '', getenv('REMOTE_ADDR'));

// Form data error handling
if($m == "" || $l == "" || $f == "" || $s == ""){
    echo "The form submission is missing data.";   
} else {
    // End form data error handling
    $sql = "INSERT INTO nys_demographics (mrn, pt_last_name, pt_first_name, pt_ssn, ip_address, record_insert_dtime)
    VALUES('$m', '$l','$f','$s','$ip',now()";
    mysqli_query($db_connect, $sql);
    echo "insert success";
}

header("refresh:3; url=demographics.php");
?>

我收到了成功消息但是db表中没有任何内容。不知道该怎么做。

Answer 1

首先打印您的成功消息，只有当您从Boolean返回时实际插入成功

if (mysqli_query($db_connect, $sql)) { 
  echo "insert success";
} else {
  printf("Error: %s\n", mysqli_error($db_connect));
}

Answer 2

您可以根据位于here的PHP文档将查询放入if，以查看查询是否成功。

Answer 3

我修改了代码以包含布尔条件检查。假设您还在db_connect.php文件中使用mysqli_connect_errno，这应该可以正常工作。

<?php
    // Connect to the database
    include_once("php_includes/db_connect.php");

    error_reporting(E_ALL); 
    ini_set("display_errors", 1);

    // Gather the posted data into local variables
    $m = $_POST['MRN'];
    $l = $_POST['LastName'];
    $f = $_POST['FirstName'];
    $s = $_POST['SSN'];

    // Get user IP Address
    $ip = preg_replace('#[^0-9.]#', '', getenv('REMOTE_ADDR'));

    // Form data error handling
    if($m == "" || $l == "" || $f == "" || $s == ""){
        echo "The form submission is missing data.";   
    } else {
        // End form data error handling
        $sql = "INSERT INTO nys_demographics (mrn, pt_last_name, pt_first_name, pt_ssn, ip_address, record_insert_dtime)
        VALUES('$m', '$l','$f','$s','$ip',now()";
        if( mysqli_query($db_connect, $sql) ) { echo "insert success"; } 
        else {  echo "error with insert"; }        
    }

    header("refresh:3; url=demographics.php");
    ?>

PHP表单提供成功消息，但在db中没有

3 个答案: