如何在Fedora上安装php + mysql？

Question

我正在尝试在本地安装wordpress。我安装了mysql (MariaDB)和php。我从mysql控制台创建了用户和数据库，我有以下3个文件：

$ cd /etc/php.d/
$ cat 30-mysqli.ini 30-pdo_mysql.ini 20-mysqlnd.ini 
; Enable mysqli extension module
extension=mysqli.so
; Enable pdo_mysql extension module
extension=pdo_mysql.so
; Enable mysqlnd extension module
extension=mysqlnd.so

当我安装了php-mysqli时自动添加。这些文件存在于/usr/lib64/php/modules/中

但是我重新启动了httpd服务器

sudo systemctl restart httpd

不过，我还是有错误：

调用未定义函数mysqli_connect()

使用代码时：

 $link = mysqli_connect("localhost", "wordpress", "wordpress", "wordpress");

当我运行phpinfo()时，我在模块部分得到了这一点，但是mysql和pdo配置中没有配置只有sqlite。

函数get_loaded_extensions()不返回mysql扩展。

php -i显示mysql和mysql的配置。

我也试图重新启动系统，但这并没有产生任何影响。

如何在Fedora 27上安装php + mysql？我有php 7.1.22。

编辑：看来mysql的ini文件没有被解析，它们不在文件列表中。这些文件与其他文件一样，都是由root拥有的：

$ ls -l {30-mysqli.ini,30-pdo_mysql.ini,20-mysqlnd.ini}
-rw-r--r--. 1 root root 55 09-12 07:12 20-mysqlnd.ini
-rw-r--r--. 1 root root 53 09-12 07:12 30-mysqli.ini
-rw-r--r--. 1 root root 59 09-12 07:12 30-pdo_mysql.ini

EDIT2 2：

$ php --ri mysqli && php --ri mysqlnd && php --ri pdo && php --ri pdo_mysql

mysqli

MysqlI Support => enabled
Client API library version => mysqlnd 5.0.12-dev - 20150407 - $Id: 38fea24f2847fa7519001be390c98ae0acafe387 $
Active Persistent Links => 0
Inactive Persistent Links => 0
Active Links => 0

Directive => Local Value => Master Value
mysqli.max_links => Unlimited => Unlimited
mysqli.max_persistent => Unlimited => Unlimited
mysqli.allow_persistent => On => On
mysqli.rollback_on_cached_plink => Off => Off
mysqli.default_host => localhost => localhost
mysqli.default_user => no value => no value
mysqli.default_pw => no value => no value
mysqli.default_port => 3306 => 3306
mysqli.default_socket => /var/lib/mysql/mysql.sock => /var/lib/mysql/mysql.sock
mysqli.reconnect => Off => Off
mysqli.allow_local_infile => On => On

mysqlnd

mysqlnd => enabled
Version => mysqlnd 5.0.12-dev - 20150407 - $Id: 38fea24f2847fa7519001be390c98ae0acafe387 $
Compression => supported
core SSL => supported
extended SSL => supported
Command buffer size => 4096
Read buffer size => 32768
Read timeout => 31536000
Collecting statistics => Yes
Collecting memory statistics => No
Tracing => n/a
Loaded plugins => mysqlnd,debug_trace,auth_plugin_mysql_native_password,auth_plugin_mysql_clear_password,auth_plugin_caching_sha2_password,auth_plugin_sha256_password
API Extensions => mysqli,pdo_mysql

mysqlnd statistics =>  
bytes_sent => 0
bytes_received => 0
packets_sent => 0
packets_received => 0
protocol_overhead_in => 0
protocol_overhead_out => 0
bytes_received_ok_packet => 0
bytes_received_eof_packet => 0
bytes_received_rset_header_packet => 0
bytes_received_rset_field_meta_packet => 0
bytes_received_rset_row_packet => 0
bytes_received_prepare_response_packet => 0
bytes_received_change_user_packet => 0
packets_sent_command => 0
packets_received_ok => 0
packets_received_eof => 0
packets_received_rset_header => 0
packets_received_rset_field_meta => 0
packets_received_rset_row => 0
packets_received_prepare_response => 0
packets_received_change_user => 0
result_set_queries => 0
non_result_set_queries => 0
no_index_used => 0
bad_index_used => 0
slow_queries => 0
buffered_sets => 0
unbuffered_sets => 0
ps_buffered_sets => 0
ps_unbuffered_sets => 0
flushed_normal_sets => 0
flushed_ps_sets => 0
ps_prepared_never_executed => 0
ps_prepared_once_executed => 0
rows_fetched_from_server_normal => 0
rows_fetched_from_server_ps => 0
rows_buffered_from_client_normal => 0
rows_buffered_from_client_ps => 0
rows_fetched_from_client_normal_buffered => 0
rows_fetched_from_client_normal_unbuffered => 0
rows_fetched_from_client_ps_buffered => 0
rows_fetched_from_client_ps_unbuffered => 0
rows_fetched_from_client_ps_cursor => 0
rows_affected_normal => 0
rows_affected_ps => 0
rows_skipped_normal => 0
rows_skipped_ps => 0
copy_on_write_saved => 0
copy_on_write_performed => 0
command_buffer_too_small => 0
connect_success => 0
connect_failure => 0
connection_reused => 0
reconnect => 0
pconnect_success => 0
active_connections => 0
active_persistent_connections => 0
explicit_close => 0
implicit_close => 0
disconnect_close => 0
in_middle_of_command_close => 0
explicit_free_result => 0
implicit_free_result => 0
explicit_stmt_close => 0
implicit_stmt_close => 0
mem_emalloc_count => 0
mem_emalloc_amount => 0
mem_ecalloc_count => 0
mem_ecalloc_amount => 0
mem_erealloc_count => 0
mem_erealloc_amount => 0
mem_efree_count => 0
mem_efree_amount => 0
mem_malloc_count => 0
mem_malloc_amount => 0
mem_calloc_count => 0
mem_calloc_amount => 0
mem_realloc_count => 0
mem_realloc_amount => 0
mem_free_count => 0
mem_free_amount => 0
mem_estrndup_count => 0
mem_strndup_count => 0
mem_estrdup_count => 0
mem_strdup_count => 0
mem_edupl_count => 0
mem_dupl_count => 0
proto_text_fetched_null => 0
proto_text_fetched_bit => 0
proto_text_fetched_tinyint => 0
proto_text_fetched_short => 0
proto_text_fetched_int24 => 0
proto_text_fetched_int => 0
proto_text_fetched_bigint => 0
proto_text_fetched_decimal => 0
proto_text_fetched_float => 0
proto_text_fetched_double => 0
proto_text_fetched_date => 0
proto_text_fetched_year => 0
proto_text_fetched_time => 0
proto_text_fetched_datetime => 0
proto_text_fetched_timestamp => 0
proto_text_fetched_string => 0
proto_text_fetched_blob => 0
proto_text_fetched_enum => 0
proto_text_fetched_set => 0
proto_text_fetched_geometry => 0
proto_text_fetched_other => 0
proto_binary_fetched_null => 0
proto_binary_fetched_bit => 0
proto_binary_fetched_tinyint => 0
proto_binary_fetched_short => 0
proto_binary_fetched_int24 => 0
proto_binary_fetched_int => 0
proto_binary_fetched_bigint => 0
proto_binary_fetched_decimal => 0
proto_binary_fetched_float => 0
proto_binary_fetched_double => 0
proto_binary_fetched_date => 0
proto_binary_fetched_year => 0
proto_binary_fetched_time => 0
proto_binary_fetched_datetime => 0
proto_binary_fetched_timestamp => 0
proto_binary_fetched_string => 0
proto_binary_fetched_json => 0
proto_binary_fetched_blob => 0
proto_binary_fetched_enum => 0
proto_binary_fetched_set => 0
proto_binary_fetched_geometry => 0
proto_binary_fetched_other => 0
init_command_executed_count => 0
init_command_failed_count => 0
com_quit => 0
com_init_db => 0
com_query => 0
com_field_list => 0
com_create_db => 0
com_drop_db => 0
com_refresh => 0
com_shutdown => 0
com_statistics => 0
com_process_info => 0
com_connect => 0
com_process_kill => 0
com_debug => 0
com_ping => 0
com_time => 0
com_delayed_insert => 0
com_change_user => 0
com_binlog_dump => 0
com_table_dump => 0
com_connect_out => 0
com_register_slave => 0
com_stmt_prepare => 0
com_stmt_execute => 0
com_stmt_send_long_data => 0
com_stmt_close => 0
com_stmt_reset => 0
com_stmt_set_option => 0
com_stmt_fetch => 0
com_deamon => 0
bytes_received_real_data_normal => 0
bytes_received_real_data_ps => 0

PDO

PDO support => enabled
PDO drivers => mysql, sqlite

pdo_mysql

PDO Driver for MySQL => enabled
Client API version => mysqlnd 5.0.12-dev - 20150407 - $Id: 38fea24f2847fa7519001be390c98ae0acafe387 $

Directive => Local Value => Master Value
pdo_mysql.default_socket => /var/lib/mysql/mysql.sock => /var/lib/mysql/mysql.sock

Answer 1

PHP配置看起来是正确的。

奇怪的是，对于httpd和其他一些服务，有时systemctl restart似乎什么也不做。但是，systemctl stop后面跟着systemctl start将正确地重新启动服务。

Answer 2

To安装PHP，只需键入：

$ sudo dnf安装php-cli

上面的命令将安装最新的稳定PHP包，包括执行PHP脚本的命令行接口、/usr/bin/php可执行文件和CGI接口。

您可能需要安装一些其他包，例如用于单元测试的PHPUnit或用于管理projects依赖关系的Composer。您可以通过以下方式安装它们：

$ sudo dnf安装phpunit composer

PHP模块

PHP只提供了一些扩展，其他的应该单独安装。PHP模块包的前缀为php-，因此，如果需要mysqli扩展，请使用：

$ sudo dnf install php-mysqli

PHP开发服务器

PHP包含简单的web服务器，可以代替功能齐全的web服务器。它只用于开发，而不是用于生产环境。

您可以通过在项目的根中键入以下内容来启动PHP开发服务器：

$ sudo php --服务器本地主机:8080-docroot。

服务器将可在http://localhost:8080/上访问。

Answer 3

要安装MySQL，首先需要检查是否安装了mysql或mysql服务器。

rpm -q mysql然后您将了解您的包yum安装mysql-server

因此，安装之后，您需要使用命令进行检查。

rpm -q mysql服务器

ANd