Question

我正在编写一个脚本，它返回位于php文件顶部的$ title变量的文字值。在脚本的最后，我使用rtrim()来删除字符串末尾的引号和分号，但是它们不会修剪。我的php文件的顶部如下所示：

<php
$title="Test Title";
$description="Test Description";
?>

当我回复字符串时，我得到：

Test Title;"

这是我的代码。谁能告诉我我做错了什么？我甚至欢迎任何有关改善这一点的建议：

<?php
//returns the value of the $title variable from the top of a php file.
$file = fopen("test.php", "r") or die("Unable to open file!");
$count = 0;
while ($count < 10) {                   //only check the first 10 lines
    $line = fgets($file);
    $isTitle = strpos($line, "itle=");         //check if $title is part of the string
    if ($isTitle !== false) {
        $fullTitle = explode("=\"", $line);      //explode it into two on =" which also trims the first quote
        $untrimmedTitle = $fullTitle[1];         //save the second part of the array as a string since rtrim needs a string
        $title = rtrim($untrimmedTitle, "\";");    //trim the quote and semi-colon from the string 
        $count = 10;                               //push the count up to 10 so it ends the loop
    }
    $count++;
}
echo $title;                                //show the title
fclose($file);
?>

Answer 1

在行中：

$title = rtrim($untrimmedTitle, "\";");

您正在从字符串中调查"和;。您想修剪'和;：

$title = rtrim($untrimmedTitle, "\';");

修改

为什么不这样做：

include "test.php"; echo $title;

Answer 2

将$title = rtrim($untrimmedTitle, "\";");更改为$title = rtrim(trim($untrimmedTitle), "\";");。没关系。

在$ untrimmedTitle结束时有一个像\n这样的休息。

Answer 3

或者你可以这样做：

$title = rtrim($untrimmedTitle, "\";\n");

PHP从平面文件返回$ title变量的值

3 个答案: