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我可以换个文件吗?
原标题:Can I str_replace in another file?

我正在研究一个文件, 该文件应该替换另一个文件中的变量。 目前我尝试过 :

$File = "$dir/submit.php";
$fh = fopen($File,  r ) or die("Couldn t edit the Config-file. Please report to admin.");
$chosendb = str_replace( $chosendb = comments; , $chosendb = wuhuws_$dir; , $chosendb );
fclose($fh);

$dir is a user input. comments is a table in the database that need to replaced with the prefix_$dir.

我做错什么了?

最佳回答

您再次忘记写入文件 。

// Read the file
$content = file_get_contents("$dir/submit.php");

// Do the editing
$content = str_replace( $chosendb = comments; , $chosendb = wuhuws_$dir; , $content);

// Save the file
file_put_contents("$dir/submit.php", $content);

然而,正如 Zerkms 所说( or atlast inted to;-) , 使用 PHP 编辑 PHP 通常是一个 " 强势 " 坏主意

您为什么不能包含此文件并手动设置这些变量, 例如 :

// Include the file    
require("$dir/submit.php"); 
// Edit the variable
$chosendb = "wuhuws_$dir";
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