How to use newline character to split string into array in php

In the development of PHP, it is often necessary to split the string according to specific characters and then convert it into an array for processing. In some situations, the content contained in the string may span multiple lines. In this case, you need to use the string newline conversion method, which can convert a string separated by multiple newlines into an array. This article will show you how to use PHP's built-in functions to achieve this functionality.

Implementation

PHP provides a built-in function explode(), which can be used to split the string according to the specified delimiter and return an array. The specific usage is as follows :

$array = explode($delimiter, $str);

Among them, $delimiter is the delimiter, and $str is the string to be split. This function will take all substrings in $str that match $delimiter as elements of the array, and return a new array $array containing these elements. .

Using the explode() function, we can easily split the string according to newline characters and generate a corresponding array. However, before performing this operation, we need to note that in order to be compatible with Windows and Unix/Linux platforms, the PHP_EOL constant should be used to represent the newline character, for example:

$array = explode(PHP_EOL, $str);

In this way, no matter what Running on the platform, we are able to correctly convert newlines into arrays.

Example

The following is an example of using the explode() function to convert newlines into an array:

<?php
// 定义一个包含多行文本的字符串
$str = "Hello, World!\r\nWelcome to PHP tutorial.\r\nThis is a tutorial for string manipulation." . PHP_EOL;

// 将字符串按照换行符进行分割
$array = explode(PHP_EOL, $str);

// 输出转换后的数组
print_r($array);
?>

The output results are as follows:

Array
(
    [0] => Hello, World!
    [1] => Welcome to PHP tutorial.
    [2] => This is a tutorial for string manipulation.
    [3] =>
)

Summary

In PHP, using the explode() function can easily split a string according to specific characters and convert it into an array for processing. When processing strings that span multiple lines, we should use the PHP_EOL constant to represent the newline character to ensure that the program can execute correctly on any platform.

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