PHP使用fwrite()自动转义报价 [英] PHP Escaping Quotes Automatically When Using fwrite()
问题描述
<?php
if($ _GET ['test'] == 'true'){
$ code = $ _POST ['code'];
$ file = fopen('testcode.inc.php','w +');
fwrite($ file,$ code);
fclose($ file);
require_once('testcode.inc.php');
}
else {
echo
< form method ='post'action ='testcode.php?test = true'>
< textarea name ='code'id ='code'>< / textarea>< br>< br>
< button type ='submit'> Test!< / button>< br>
< / form>
;
}
?>
当我在我的表单中输入以下内容:
<?php
echo'test';
?>
它以文件形式保存:
<?php
echo \'test\';
?>
为什么php会自动转义我的报价?
它不是fwrite这样做,因为你有 magic_quotes 启用。
如果您不能在php.ini文件中禁用魔术引号,那么您可以在运行时禁用它,一点点PHP循环遍历所有的输入数组,并删除不必要的斜杠,那么您不需要担心要剥离哪个POST / GET键。 禁用魔术报价
<?php
if(get_magic_quotes_gpc()){
function stripslashes_gpc(& $ value)
{
$ value = stripslashes($ value);
}
array_walk_recursive($ _ GET,'stripslashes_gpc');
array_walk_recursive($ _ POST,'stripslashes_gpc');
array_walk_recursive($ _ COOKIE,'stripslashes_gpc');
array_walk_recursive($ _ REQUEST,'stripslashes_gpc');
}
?>
PHP is automatically escaping my quotes before writing to a file using fwrite. I am trying to make a test code page. Here is the code I have:
<?php
if ($_GET['test'] == 'true') {
$code = $_POST['code'];
$file = fopen('testcode.inc.php', 'w+');
fwrite($file, $code);
fclose($file);
require_once('testcode.inc.php');
}
else {
echo "
<form method='post' action='testcode.php?test=true'>
<textarea name='code' id='code'></textarea><br><br>
<button type='submit'>Test!</button><br>
</form>
";
}
?>
When I enter the following into my form:
<?php
echo 'test';
?>
It gets saved in the file as:
<?php
echo \'test\';
?>
Why is php automatically escaping my quotes?
Its not fwrite thats doing it, its because you have magic_quotes enabled.
If you cant disable magic quotes in your php.ini file then you can disable it at runtime, a simple bit of PHP will loop through ALL your input arrays and strip out the unwanted slashes, then you wont need to worry about which POST/GET keys to strip. Disabling Magic Quotes
<?php
if (get_magic_quotes_gpc()) {
function stripslashes_gpc(&$value)
{
$value = stripslashes($value);
}
array_walk_recursive($_GET, 'stripslashes_gpc');
array_walk_recursive($_POST, 'stripslashes_gpc');
array_walk_recursive($_COOKIE, 'stripslashes_gpc');
array_walk_recursive($_REQUEST, 'stripslashes_gpc');
}
?>
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