我应该如何使用php在mysql数据库中插入文本？

Question

How should i insert texts messages in mysql database using PHP.

My Code:

<?php

$message = htmlspecialchars($_POST['message']);
$message = mysqli_real_escape_string($connection, $message);

mysqli_query($connection, "INSERT INTO messages (messages) VALUE ('$message')");
?> 

My problem :

When i am entering this sign (°) in message text area, it inserts nothing.

Answer 1

You should prefer prepared statements over escaping string.

$connection = new mysqli('localhost', 'user', 'password', 'database');

if (!($stmt = $connection->prepare('INSERT INTO `messages` (`messages`) VALUES(?);')))
{
  echo "error {$connection->errno} on prepare: {$mysqli->error}";
}


if (!$stmt->bind_param('s', $message))
{
  echo "error {$stmt->errno} on bind param: {$stmt->error}";
}

if (!$stmt->execute())
{
  echo "error {$stmt->errno} on execute: {$stmt->error}";
}

Answer 2

尝试像这样引用值：

mysqli_query($connection, "INSERT INTO messages (messages) VALUE ('$message')");

Answer 3

Put this code before you execute your query

mysqli_set_charset($con,"utf8");

and set collation of your column to

utf8_general_ci

Answer 4

Use base64_encode and base64_decode

Here is some example.

$str = '° some special chars 😆😆😆';

$str_encoded = base64_encode($str);
echo $str_encoded; //ready to be inserted to the DB
$str_decoded = base64_decode($str_encoded);
echo  $str_decoded; // retrieved and decoded