How to use regex to remove carriage return characters in php

In PHP, you can use the preg_replace() function with the regular expression "/\r|\n/" to remove carriage returns; you only need to execute the regular expression to search for carriage returns in the string , and replace it with a null character, the syntax is "preg_replace('/\r|\n/','',$str)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, you can use the preg_replace() function Use regular expressions to remove carriage returns (line feeds).

The preg_replace function performs a regular expression search and replace.

Just use the preg_replace function to perform a regular expression search for carriage return characters in the string and replace them with empty characters.

Implementation code:

<?php
header("Content-type:text/html;charset=utf-8");
$str="676
sdfhg
ju80
87";
echo "去除回车符前：\n";
echo $str;
$str = preg_replace(&#39;/\r|\n/&#39;, &#39;&#39;, $str); 
echo "\n去除回车符后：\n";
echo $str;
?>

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