How to replace carriage return and line feed in php

How to replace carriage returns in php: 1. Use the statement "str_replace(array("/r", "/n", "/r/n"), "", $string);"; 2 , using regular expressions; 3. Through the statement "$str = str_replace(PHP_EOL,)".

Three ways to replace carriage return and line feed in PHP

A small line break actually works on different platforms There are different implementations, why is this? The world is diverse!

Originally, /n is used to replace line breaks in the Unix world.

In order to reflect the difference, Windows uses /r/n.

What’s more interesting is that in Mac Used /r.

Therefore, there are a lot of troubles when writing programs on different platforms, such as replacing newlines.

The first way

str_replace(array("/r", "/n", "/r/n"), "", $string);

The second way is to use regular expressions

$str = preg_replace('//s*/', '', $str);

The third way

I have to look at it again here One of PHP's defined variables

PHP_EOL represents the newline character of PHP. This variable will change according to the platform. It will be /r/n under Windows and /n under Linux. Under mac it is /r

$str = str_replace(PHP_EOL, '', $str);

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