Manually enabling Swoole via php.ini

On most systems Swoole can be enabled by directly editing your

configuration file, you will want to add

to the end of the file and then Swoole should be enabled.

Enabling Swoole via phpenmod

Some Linux distributions like Debian or Ubuntu use the PHP

to load PHP extensions, in this case you can use

to enable Swoole.

一般系统 都可以通过添加扩展到php.ini的方式添加swoole支持，但我用的debian10+php7.4不支持，报如下错
 

PHP Warning: PHP Startup: Unable to load dynamic library 'swoole' (tried: /usr/lib/php/20190902/swoole (/usr/lib/php/20190902/swoole: cannot open shared object file: No such file or directory), /usr/lib/php/20190902/swoole.so (/usr/lib/php/20190902/swoole.so: undefined symbol: php_json_exception_ce)) in Unknown on line 0

只能通过

#!/bin/bash

# Create a Swoole extension PHP ini file, letting PHP know which modules to load
$ sudo bash -c "cat > /etc/php/<PHP_VERSION>/mods-available/swoole.ini << EOF
; Configuration for Swoole
; priority=25
extension=swoole
EOF"

# Enable the Swoole PHP extension only on CLI mode
$ sudo phpenmod -s cli swoole

# Optional: Enable Swoole for specific version of PHP CLI
$ sudo phpenmod -s cli -v 7.4 swoole

# Check if the Swoole extension has been enabled
$ php -m | grep swoole

You can also disable Swoole using

if you need to (this is not uninstalling, just turning Swoole off):

#!/bin/bash

# Turn off Swoole for CLI or a specific PHP install
sudo phpdismod -s cli swoole
sudo phpdismod -s cli -v 7.4 swoole

$file  = $_FILES[‘file’];
        $file_name = $file[‘tmp_name’];
        if($file_name == '') {
            $this->error("请选择要上传的csv文件");
        }
        // 以只读的方式打开文件
        $handle = fopen($file_name, 'r');
        if($handle === FALSE) {
            $this->error("打开文件资源失败");
        }
        // 删除上传文件
        unlink($file_name);
        // setlocale() 函数设置地区信息（地域信息）。
        @setlocale(LC_ALL, 'zh_CN');
        // CSV对应的字段名
        $csv_val = array('name', 'email', 'mobile', 'department', 'feedback_name', 'feedback_email', 'feedback_mobile', 'feedback_department', 'level');
        $data = array();
        while(($row = fgetcsv($handle)) !== FALSE) {
            //解决中文乱码
            $row = eval('return '.iconv('gbk','utf-8',var_export($row,true)).';');

            //这里需要检查和给的字段数是否一致，如果不一致，则不能写入
            $tmp_row = array();
            foreach ($csv_val as $k => $v) {
                $row_value = ltrim($row[$k], '`');
                $encode = mb_detect_encoding($row_value, array("ASCII", "UTF-8", "GB2312", "GBK", "BIG5"));
                if( $encode!="UTF-8" ){
                    $tmp_row[$v] = trim(iconv($encode,'UTF-8//IGNORE', $row_value));
                }else{
                    $tmp_row[$v] = trim($row_value);
                }
            }
            $data[] = $tmp_row;
        }
        // 关闭资源
        fclose($handle);

PHP在处理csv在数据导入导出方面，要比.xls高效很多。

实现一上传csv文件导入功能时，遇到上传文件编码不是UTF-8的情况，导致读取的数据乱码。如果csv文件是utf-8文件，可能导致excel不能正常识别，所以就遇到的问题。

搜索后发现mb_detect_encoding可以检测字符串编码，不一定百分百识别，至少能满足我的需求

代码片断：

            $tmp_row = array();
            foreach ($csv_val as $k => $v) {
                $row_value = ltrim($row[$k], '`');
                $encode = mb_detect_encoding($row_value, array("UTF-8", "GB2312", "CP936", "GBK"));
                if( $encode!="UTF-8" ){
                    $tmp_row[$v] = trim(iconv($encode,'UTF-8', $row_value));
                }else{
                    $tmp_row[$v] = trim($row_value);
                }
            }
            $data[] = $tmp_row;