How to delete comments in php

How to delete comments in php: first create a file code for testing; then customize a "removeComment" method; then implement the function of deleting comments through the "preg_replace" function; finally execute this in the browser Just file.

PHP Remove comments in the code

The test file code is as follows:

<?php
 
/**
 * Created by PhpStorm.
 * User: Yang
 * Date: 2019/10/16
 * Time: 10:25
 */
 
// 计算和
// 计算和
// 计算和
$a = 1;
$b = 2;
$c = $a+$b; //总和
 
/*
 * 求和函数
 */
function sum($a, $b) {
 
    return $a + $b; //返回值
}
 
#  第二种注释
$a = 1;
$b = 2;
## 求乘积
$c = $a * $b; #     结果
 
//特殊
$usedFuncs = "abcd";
preg_split("//is", implode("", $usedFuncs), -1, PREG_SPLIT_NO_EMPTY);

The code to remove the comments is as follows:

/**
 * Created by PhpStorm.
 * User: 25754
 * Date: 2019/10/17
 * Time: 9:54
 */
 
function removeComment($content)
{
    return preg_replace("/(\/\*(\s|.)*?\*\/)|(\/\/.(\s|.*))|(#(\s*)?(.*))/", '', str_replace(array("\r\n", "\r"), "\n", $content));
}
 
$content = file_get_contents("./test.php");
echo removeComment($content);

The result code is as follows:

$a = 1;
$b = 2;
$c = $a+$b;
 
function sum($a, $b) {
 
    return $a + $b; }
 
 
$a = 1;
$b = 2;
 
$c = $a * $b;
 
$usedFuncs = "abcd";
preg_split("

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