How to replace all newlines in php

PHP replaces all newlines in a string. You can use the "str_replace()" function. The operation method is: 1. Create a php sample file; 2. Set a string variable with newlines "$ string"; 3. Use the "str_replace" function to replace the newline character in "$string" with the specified string, and save the result in the variable "$newString"; 4. Echo outputs the result.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

To replace all newlines in a PHP string, you can use the str_replace function.

The following is a sample code:

<?php
$string = "这是一行文本
这是第二行文本
这是第三行文本";
// 替换所有换行符为指定的字符串（例如空格）
$newString = str_replace("
", " ", $string);
echo $newString;
?>

Run the above code, The output will be: This is a line of text This is a second line of text This is a third line of text.

In the example, we use the str_replace function to replace the (newline character) in $string with the specified string, here It’s a space " ". You can modify the replaced string to something else if needed.

It should be noted that is an escape character representing a newline character, and will be parsed as an actual newline character in a double-quoted string. If you use single quotes in your string, you need to use '\ ' to represent a newline character.

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