如何使用PHP从文本文件中删除某些行?

问题描述：

我有一个包含此数据的文本文件:

I have a text file contains this data :

947 11106620030 Ancho Khoren MKK6203简介忙2,00
948 balblalbllablab
949 balblalbllablab
950 balblalbllablab
951 11106620031 Adagasa Goo MKB6201内部经济 3,00
952 balblalbllablab
953 balblalbllablab
954 balblalbllablab
962 11106620032 Fumiou Moon MKB6201世界之书 3,00

947 11106620030 Ancho Khoren MKK6203 Introduction Busy 2,00
948 balblalbllablab
949 balblalbllablab
950 balblalbllablab
951 11106620031 Adagasa Goo MKB6201 Economy Inside 3,00
952 balblalbllablab
953 balblalbllablab
954 balblalbllablab
962 11106620032 The Fumiou Moon MKB6201 The Book of World 3,00

但是，我需要删除所有包含"balblabllablab"的行，而只保留tge特定的数据行，如下所示:

However, I need to remove all the lines containing 'balblabllablab' and just leave tge specific lines of data, as shown below:

947 11106620030 Ancho Khoren MKK6203简介忙2,00
951 11106620031 Adagasa Goo MKB6201
内部经济3,00
962 11106620032伏见月亮MKB6201 世界之书3,00

947 11106620030 Ancho Khoren MKK6203 Introduction Busy 2,00
951 11106620031 Adagasa Goo MKB6201
Economy Inside 3,00
962 11106620032 The Fumiou Moon MKB6201 The Book of World 3,00

我知道如何打开和写入文件以及关闭文件，但是我不知道如何使用php删除行/内容.如何使用php从文件中删除不需要的行?

I know how to open and write to a file aswell as closing the file, but i don't know how to remove lines / content using php. How can I remove the unneeded lines from a file using php?

答

使用file($path)函数将行放入数组中，然后遍历该数组.

Use the file($path) function to get the lines into an array, then loop through it.

$lines = file($path, FILE_IGNORE_NEW_LINES);
$remove = "balblalbllablab";
foreach($lines as $key => $line)
  if(stristr($line, $remove)) unset($lines[$key]);

$data = implode('\n', array_values($lines));

$file = fopen($path);
fwrite($file, $data);
fclose($file);

如何使用PHP从文本文件中删除某些行?

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