如何在php中修改或删除一行文本文件？

例如，我在几行中几乎没有学生信息记录：

AbuBaka Male
MaryLu Female
WongAhKao Male

如果我想删除文件中的

MaryLu-Female

记录，并成为：

AbuBaka Male
WongAhKao Male

怎么做？如果我使用

W

或

W+

，所有数据都将被擦除。

尝试以下方法：

1.txt有以下内容：

PHP代码：

---

因为只有值，所以可以使用

例如：

<?php

// Read all lines from a file to array
$users = file('users.txt',FILE_IGNORE_NEW_LINES);

// Search for the array id of the line we want to be deleted
$idToDelete = array_search('MaryLu Female',$users);

// Check if we have a result
if($idToDelete !== false){
    // If so, delete the array entry
    unset($users[$idToDelete]);
}

// Finally, put the remaining entries back into the file,
// overwriting any existing content.
file_put_contents("users.txt",implode(PHP_EOL,$users));

---

看在上帝的份上，你为什么要把它们保存在一个文本文件中？我们有这类东西的数据库。将文件读入数组，对数组进行更改，覆盖文件。@AhYong有进展吗？
<?php

$delete = 'MaryLu Female';
$array = file('1.txt', FILE_IGNORE_NEW_LINES);

$id = array_search($delete, $array);
array_splice($array, $id, 1);
$string = implode("\n", $array);

file_put_contents('2.txt', $string);

?>

AbuBaka Male
WongAhKao Male

<?php

// Read all lines from a file to array
$users = file('users.txt',FILE_IGNORE_NEW_LINES);

// Search for the array id of the line we want to be deleted
$idToDelete = array_search('MaryLu Female',$users);

// Check if we have a result
if($idToDelete !== false){
    // If so, delete the array entry
    unset($users[$idToDelete]);
}

// Finally, put the remaining entries back into the file,
// overwriting any existing content.
file_put_contents("users.txt",implode(PHP_EOL,$users));