set_magic_quotes_runtime()

(PHP 4, PHP 5)

设置当前 magic_quotes_runtime 配置选项的激活状态

Warning
This function wasDEPRECATEDin PHP 5.3.0,andREMOVEDas of PHP 7.0.0.

说明

set_magic_quotes_runtime(bool $new_setting): bool

设置当前magic_quotes_runtime配置选项的激活状态。

错误／异常

自 PHP 5.3 起，该函数已经被弃用，执行它的时候会抛出 E_DEPRECATED 异常。自 PHP 5.4 起，尝试开启 magic quotes 时该函数会产生一个 E_CORE_ERROR 错误。

参数

$new_setting: 关闭是FALSE，开启是TRUE。

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Example #1set_magic_quotes_runtime()例子

<?php
// 创建临时文件指针
$fp = tmpfile();
// 写入一些数据
fwrite($fp, '\'PHP\' is a Recursive acronym');
// 没有 magic_quotes_runtime
rewind($fp);
set_magic_quotes_runtime(false);
echo 'Without magic_quotes_runtime: ' . fread($fp, 64), PHP_EOL;
// 有 magic_quotes_runtime
rewind($fp);
set_magic_quotes_runtime(true);
echo 'With magic_quotes_runtime: ' . fread($fp, 64), PHP_EOL;
// 清理
fclose($fp);
?>

以上例程会输出：

Without magic_quotes_runtime: 'PHP' is a Recursive acronym
With magic_quotes_runtime: \'PHP\' is a Recursive acronym

参见

get_magic_quotes_gpc() 获取当前 magic_quotes_gpc 的配置选项设置
get_magic_quotes_runtime() 获取当前 magic_quotes_runtime 配置选项的激活状态

Be aware that even using ini_set to set 'magic_quotes_runtime' will stop working in PHP 5.4. See http://php.net/manual/en/info.configuration.php#ini.magic-quotes-runtime

You should NEVER rely on magic quotes or addslashes for security in an SQL context. You should ALWAYS use proper escape functions, such as mysql_real_escape_string. Failure to do so may result in an SQL injection vulnerability.

A simple check and disabling of magic quotes whenever needed (e.g. if you deploy to multiple servers or you don't know the target server's PHP version).
<?php
if(version_compare(PHP_VERSION, '5.3.0', '<')){
  set_magic_quotes_runtime(0);
}
?>

get_magic_quotes runtime and set_magic_quotes_runtime are useful when you want to read some data in a binary file using fread() and some bytes in such file may be interpreted as \ (backslash), " (double quotes), ' (simple quote) or any "special" character that has a meaning for string processing.