dongqiuxu2270
2014-05-23 10:11
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已采纳

将LaTeX代码插入MySQL

I am using PHP and MySql. TeX is posted to server.php file through a form and exploded into an array:

foreach($_POST['ques'] as $i){  
  $arr = explode('~', $i);
}

$sql = "INSERT INTO `QUESTIONS`(`Text`) VALUES ('$arr[2]')";

$run = mysql_query( $sql, $conn ) or die(mysql_error());

Btw echo $arr[2]; shows correct Tex syntax : "[\Rightarrow{z=\frac{43}{-44}}]"

But on database it is stored without backslashes "[Rightarrow{z=frac{43}{-44}}]"

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我正在使用PHP和MySql。 TeX通过表单发布到server.php文件并展开成一个数组： 

  foreach（$ _ POST ['ques'] as $ i）{
 $ arr =  explode（'〜'，$ i）; 
} 
 
 $ sql =“INSERT INTO`QUESTIONS`（`Text`）VALUES（'$ arr [2]'）”; 
 
 $ run =  mysql_query（$ sql，$ conn）或die（mysql_error（））; 
   
 
 
 Btw echo $ arr [2]; 显示正确的Tex语法：“[\ Rightarrow {z = \ frac {43} { -  44}}]” 
 
 
但在数据库中，它存储时没有反斜杠“[Rightarrow {z = frac  {43} { -  44}}]“
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1条回答 默认 最新

  • dongren4099 2014-05-23 12:35
    已采纳

    Do not use old mysql_* functions. Use mysqli_*. or PDO as in this example.

    The parameterized/prepared query makes you to stop worrying about quoting and malicious sql-attacks. (But drive safely anyway)

    $dsn = 'mysql:dbname=testdb;host=127.0.0.1';
$dbh = new PDO($dsn, $user, $password);
$sth = $dbh->prepare("INSERT INTO `QUESTIONS`(`Text`) VALUES (?)");
$sth->execute(array($arr[2]));
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