PHP 搜索和回显特定文本 [英] PHP search and echo specific text

问题描述

我遇到了问题.我想要做的是让我的 PHP 代码进行搜索，直到找到输入的内容.例如，如果我搜索数字12".我希望它进入一个像下面这样的文件并找到其中包含12"的行.

I'm having a problem. What I want to do is make my PHP code do a search until it finds what was entered. For example if I searched the number "12." I want it to go in a file like the one below and find the line that has "12" in it.

Dark Green = 11 = No = 20,
Light Blue = 12 = No = 20,
Lime Green = 13 = No = 20,
Sensei Gray = 14 = Yes = 0,

在这种情况下，这一行将包含 12:

In that case this line would have the 12 in it:

Light Blue = 12 = No = 20,

接下来我希望代码在找到该行后执行的操作是读取它左侧="符号之前的文本.在这种情况下，我希望我的代码阅读:

Next what I want the code to do after it finds the line is for it to read the text that is before the "=" sign to the left of it. In this case I would want my code to read:

Light Blue

我一直想这样做，任何帮助将不胜感激！

I've always wanted to do this and any help would be HIGHLY appreciated!

推荐答案

试试下面的代码

$string = 'Dark Green = 11 = No = 20,
Light Blue = 12 = No = 20,
Lime Green = 13 = No = 20,
Sensei Gray = 14 = Yes = 0';


$string = explode(',',$string);
foreach($string as $row)
{
    preg_match('/^(D+)s=s(d+)s=s(D+)s=s(d+)/', trim($row), $matches);
    echo $matches[1];//Dark Green
    echo $matches[2];//11
    echo $matches[3];//No
    echo $matches[4];//20
}

在循环中用于检查要搜索的单词

In the loop use to check the word to search

就这样

if($matches[1] == 'Dark Green')
{
   echo $matches[1];
}

或

   if($matches[2] == 11)
    {
       echo $matches[2];
    }

(...)要获取文件中的文本，请尝试使用

(...) To get the text in the file try use

    $string = file_get_contents('file.txt');

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