Xdebug 在 CLI 上工作，但 Apache 不会加载它
Xdebug works on CLI but Apache wont load it
为了我一生的挚爱，我无法弄清楚这一点：我已经从源代码编译了 xdebug，虽然 CLI 会告诉我它处于活动状态，但网络服务器不会。
这是我经历的过程。
phpize
./configure --enable-xdebug
make
make install
mv `compiled module` `desired location`
然后我编辑 php.ini 以包括：
zend_extension=/usr/local/php/extensions/xdebug.so
xdebug.default_enable=1
xdebug.remote_enable=1
xdebug.mode = develop
xdebug.log_level = 7
xdebug.var_display_max_data = -1
xdebug.cli_color = 1;
xdebug.var_display_max_depth = -1
xdebug.collect_params = 3
xdebug.max_nesting_level=200
其次是：
apachectl restart
摘要如下：
OS: Mac OS 大苏尔 11.2.3
PHP：7.3.24
Xdebug: 3.0.3
我已经检查过 zend_extension=location 和编译模块在那里
网络服务器正在加载正确的 php.ini
我的系统中只有一个 php 二进制文件。
此处没有 Brew 设置。我喜欢编译和安装我自己的二进制文件以了解幕后发生的事情。
这是 php -v
的输出
Ares@MacBook-Pro ~ % php -v
WARNING: PHP is not recommended
PHP is included in macOS for compatibility with legacy software.
Future versions of macOS will not include PHP.
PHP 7.3.24-(to be removed in future macOS) (cli) (built: Dec 21 2020 21:33:25) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
with Xdebug v3.0.3, Copyright (c) 2002-2021, by Derick Rethans
这里是 php -i（删除了 non-relevant 部分）
php -i
phpinfo()
PHP Version => 7.3.24-(to be removed in future macOS)
System => Darwin MacBook-Pro.local 20.3.0 Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64 x86_64
Build Date => Dec 21 2020 21:31:03
Server API => Command Line Interface
Virtual Directory Support => disabled
Configuration File (php.ini) Path => /etc
Loaded Configuration File => /etc/php.ini
Scan this dir for additional .ini files => (none)
Additional .ini files parsed => (none)
PHP API => 20180731
PHP Extension => 20180731
Zend Extension => 320180731
Zend Extension Build => API320180731,NTS
PHP Extension Build => API20180731,NTS
Debug Build => no
Thread Safety => disabled
Zend Signal Handling => enabled
Zend Memory Manager => enabled
Zend Multibyte Support => provided by mbstring
IPv6 Support => enabled
DTrace Support => disabled
Registered PHP Streams => https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters => zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk
This program makes use of the Zend Scripting Language Engine:
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
with Xdebug v3.0.3, Copyright (c) 2002-2021, by Derick Rethans
_______________________________________________________________________
Configuration
....
Core
PHP Version => 7.3.24-(to be removed in future macOS)
Directive => Local Value => Master Value
allow_url_fopen => On => On
allow_url_include => Off => Off
arg_separator.input => & => &
arg_separator.output => & => &
auto_append_file => no value => no value
auto_globals_jit => On => On
auto_prepend_file => no value => no value
browscap => no value => no value
default_charset => UTF-8 => UTF-8
default_mimetype => text/html => text/html
disable_classes => no value => no value
disable_functions => no value => no value
display_errors => STDOUT => STDOUT
display_startup_errors => On => On
doc_root => no value => no value
docref_ext => no value => no value
docref_root => no value => no value
enable_dl => Off => Off
enable_post_data_reading => On => On
error_append_string => no value => no value
error_log => no value => no value
error_prepend_string => no value => no value
error_reporting => 22527 => 22527
expose_php => On => On
extension_dir => /usr/lib/php/extensions/no-debug-non-zts-20180731 => /usr/lib/php/extensions/no-debug-non-zts-20180731
file_uploads => On => On
hard_timeout => 2 => 2
highlight.comment => <font style="color: #FF8000">#FF8000</font> => <font style="color: #FF8000">#FF8000</font>
highlight.default => <font style="color: #0000BB">#0000BB</font> => <font style="color: #0000BB">#0000BB</font>
highlight.html => <font style="color: #000000">#000000</font> => <font style="color: #000000">#000000</font>
highlight.keyword => <font style="color: #007700">#007700</font> => <font style="color: #007700">#007700</font>
highlight.string => <font style="color: #DD0000">#DD0000</font> => <font style="color: #DD0000">#DD0000</font>
html_errors => Off => Off
ignore_repeated_errors => Off => Off
ignore_repeated_source => Off => Off
ignore_user_abort => Off => Off
implicit_flush => On => On
include_path => .: => .:
input_encoding => no value => no value
internal_encoding => no value => no value
log_errors => On => On
log_errors_max_len => 1024 => 1024
mail.add_x_header => Off => Off
mail.force_extra_parameters => no value => no value
mail.log => no value => no value
max_execution_time => 0 => 0
max_file_uploads => 20 => 20
max_input_nesting_level => 64 => 64
max_input_time => -1 => -1
max_input_vars => 1000 => 1000
memory_limit => 128M => 128M
open_basedir => no value => no value
output_buffering => 0 => 0
output_encoding => no value => no value
output_handler => no value => no value
post_max_size => 8M => 8M
precision => 14 => 14
realpath_cache_size => 4096K => 4096K
realpath_cache_ttl => 120 => 120
register_argc_argv => On => On
report_memleaks => On => On
report_zend_debug => Off => Off
request_order => GP => GP
sendmail_from => no value => no value
sendmail_path => /usr/sbin/sendmail -t -i => /usr/sbin/sendmail -t -i
serialize_precision => -1 => -1
short_open_tag => Off => Off
SMTP => localhost => localhost
smtp_port => 25 => 25
sys_temp_dir => no value => no value
syslog.facility => LOG_USER => LOG_USER
syslog.filter => no-ctrl => no-ctrl
syslog.ident => php => php
track_errors => Off => Off
unserialize_callback_func => no value => no value
upload_max_filesize => 2M => 2M
upload_tmp_dir => no value => no value
user_dir => no value => no value
user_ini.cache_ttl => 300 => 300
user_ini.filename => .user.ini => .user.ini
variables_order => GPCS => GPCS
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
zend.assertions => -1 => -1
zend.detect_unicode => On => On
zend.enable_gc => On => On
zend.multibyte => Off => Off
zend.script_encoding => no value => no value
zend.signal_check => Off => Off
....
xdebug
__ __ _ _
\ \ / / | | | |
\ V / __| | ___| |__ _ _ __ _
> < / _` |/ _ \ '_ \| | | |/ _` |
/ . \ (_| | __/ |_) | |_| | (_| |
/_/ \_\__,_|\___|_.__/ \__,_|\__, |
__/ |
|___/
Version => 3.0.3
Support Xdebug on Patreon, GitHub, or as a business: https://xdebug.org/support
Enabled Features<br/>(through 'xdebug.mode' setting)
Feature => Enabled/Disabled
Development Aids => ✔ enabled
Coverage => ✘ disabled
GC Stats => ✘ disabled
Profiler => ✘ disabled
Step Debugger => ✘ disabled
Tracing => ✘ disabled
Directive => Local Value => Master Value
xdebug.auto_trace => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.cli_color => 0 => 0
xdebug.client_discovery_header => no value => no value
xdebug.client_host => localhost => localhost
xdebug.client_port => 9003 => 9003
xdebug.cloud_id => no value => no value
xdebug.collect_assignments => Off => Off
xdebug.collect_includes => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.collect_params => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.collect_return => Off => Off
xdebug.collect_vars => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.connect_timeout_ms => 200 => 200
xdebug.coverage_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.default_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.discover_client_host => Off => Off
xdebug.dump.COOKIE => no value => no value
xdebug.dump.ENV => no value => no value
xdebug.dump.FILES => no value => no value
xdebug.dump.GET => no value => no value
xdebug.dump.POST => no value => no value
xdebug.dump.REQUEST => no value => no value
xdebug.dump.SERVER => no value => no value
xdebug.dump.SESSION => no value => no value
xdebug.dump_globals => On => On
xdebug.dump_once => On => On
xdebug.dump_undefined => Off => Off
xdebug.file_link_format => no value => no value
xdebug.filename_format => no value => no value
xdebug.force_display_errors => Off => Off
xdebug.force_error_reporting => 0 => 0
xdebug.gc_stats_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_output_name => gcstats.%p => gcstats.%p
xdebug.halt_level => 0 => 0
xdebug.idekey => no value => no value
xdebug.log => no value => no value
xdebug.log_level => 7 => 7
xdebug.max_nesting_level => 256 => 256
xdebug.max_stack_frames => -1 => -1
xdebug.mode => develop => develop
xdebug.output_dir => /var/tmp/ => /var/tmp/
xdebug.overload_var_dump => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.profiler_append => Off => Off
xdebug.profiler_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p
xdebug.remote_autostart => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_connect_back => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_host => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log_level => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_mode => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_port => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_timeout => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.scream => Off => Off
xdebug.show_error_trace => Off => Off
xdebug.show_exception_trace => Off => Off
xdebug.show_local_vars => Off => Off
xdebug.show_mem_delta => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.start_upon_error => default => default
xdebug.start_with_request => default => default
xdebug.trace_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_format => 0 => 0
xdebug.trace_options => 0 => 0
xdebug.trace_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_output_name => trace.%c => trace.%c
xdebug.trigger_value => no value => no value
xdebug.var_display_max_children => 128 => 128
xdebug.var_display_max_data => 512 => 512
xdebug.var_display_max_depth => 3 => 3
这是网络服务器 phpinfo() 中 headers 的输出，没有提及 xdebug。显然，当尝试通过网络服务器使用 xdebug 函数时，它们会抛出致命错误，因为函数未定义。
Build Date Dec 21 2020 21:31:03
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc
Loaded Configuration File /etc/php.ini
Scan this dir for additional .ini files (none)
Additional .ini files parsed (none)
PHP API 20180731
PHP Extension 20180731
Zend Extension 320180731
Zend Extension Build API320180731,NTS
PHP Extension Build API20180731,NTS
Debug Build no
Thread Safety disabled
Zend Signal Handling enabled
Zend Memory Manager enabled
Zend Multibyte Support provided by mbstring
IPv6 Support enabled
DTrace Support disabled
Registered PHP Streams https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk
Zend logoThis program makes use of the Zend Scripting Language Engine:
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
对可能发生的事情有什么想法吗？
我已经看过大多数其他类似的问题，但没有运气。
用头撞墙几个小时，终于明白问题出在哪里了。
关于 xcode 未进行代码签名的错误消息：
Failed loading /usr/local/php/extensions/xdebug.so: dlopen(/usr/local/php/extensions/xdebug.so, 9): no suitable image found. Did find:
/usr/local/php/extensions/xdebug.so: code signature in (/usr/local/php/extensions/xdebug.so) not valid for use in process using Library Validation: mapped file has no cdhash, completely unsigned? Code has to be at least ad-hoc signed.
我能够使用我的 Apple Developer Certificate 对其进行代码签名。但是，此后消息更改为：
Failed loading /usr/local/php/extensions/xdebug.so: dlopen(/usr/local/php/extensions/xdebug.so, 9): no suitable image found. Did find:
/usr/local/php/extensions/xdebug.so: code signature in (/usr/local/php/extensions/xdebug.so) not valid for use in process using Library Validation: mapping process is a platform binary, but mapped file is not
事实证明，MacOS 11 需要对所有内容进行库验证。我的解决方案（如果您不知道自己在做什么，则不推荐）是在系统范围内禁用库验证以使其能够加载。
您可以使用以下命令来完成：
sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool true
然后您可以重新启动 apache，模块将加载，之后您可以使用
重新激活库验证
sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool false
调试愉快
为了我一生的挚爱，我无法弄清楚这一点：我已经从源代码编译了 xdebug，虽然 CLI 会告诉我它处于活动状态，但网络服务器不会。
这是我经历的过程。
phpize
./configure --enable-xdebug
make
make install
mv `compiled module` `desired location`
然后我编辑 php.ini 以包括：
zend_extension=/usr/local/php/extensions/xdebug.so
xdebug.default_enable=1
xdebug.remote_enable=1
xdebug.mode = develop
xdebug.log_level = 7
xdebug.var_display_max_data = -1
xdebug.cli_color = 1;
xdebug.var_display_max_depth = -1
xdebug.collect_params = 3
xdebug.max_nesting_level=200
其次是：
apachectl restart
摘要如下：
OS: Mac OS 大苏尔 11.2.3 PHP：7.3.24 Xdebug: 3.0.3
我已经检查过 zend_extension=location 和编译模块在那里
网络服务器正在加载正确的 php.ini 我的系统中只有一个 php 二进制文件。
此处没有 Brew 设置。我喜欢编译和安装我自己的二进制文件以了解幕后发生的事情。
这是 php -v
的输出Ares@MacBook-Pro ~ % php -v
WARNING: PHP is not recommended
PHP is included in macOS for compatibility with legacy software.
Future versions of macOS will not include PHP.
PHP 7.3.24-(to be removed in future macOS) (cli) (built: Dec 21 2020 21:33:25) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
with Xdebug v3.0.3, Copyright (c) 2002-2021, by Derick Rethans
这里是 php -i（删除了 non-relevant 部分）
php -i
phpinfo()
PHP Version => 7.3.24-(to be removed in future macOS)
System => Darwin MacBook-Pro.local 20.3.0 Darwin Kernel Version 20.3.0: Thu Jan 21 00:07:06 PST 2021; root:xnu-7195.81.3~1/RELEASE_X86_64 x86_64
Build Date => Dec 21 2020 21:31:03
Server API => Command Line Interface
Virtual Directory Support => disabled
Configuration File (php.ini) Path => /etc
Loaded Configuration File => /etc/php.ini
Scan this dir for additional .ini files => (none)
Additional .ini files parsed => (none)
PHP API => 20180731
PHP Extension => 20180731
Zend Extension => 320180731
Zend Extension Build => API320180731,NTS
PHP Extension Build => API20180731,NTS
Debug Build => no
Thread Safety => disabled
Zend Signal Handling => enabled
Zend Memory Manager => enabled
Zend Multibyte Support => provided by mbstring
IPv6 Support => enabled
DTrace Support => disabled
Registered PHP Streams => https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters => zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk
This program makes use of the Zend Scripting Language Engine:
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
with Xdebug v3.0.3, Copyright (c) 2002-2021, by Derick Rethans
_______________________________________________________________________
Configuration
....
Core
PHP Version => 7.3.24-(to be removed in future macOS)
Directive => Local Value => Master Value
allow_url_fopen => On => On
allow_url_include => Off => Off
arg_separator.input => & => &
arg_separator.output => & => &
auto_append_file => no value => no value
auto_globals_jit => On => On
auto_prepend_file => no value => no value
browscap => no value => no value
default_charset => UTF-8 => UTF-8
default_mimetype => text/html => text/html
disable_classes => no value => no value
disable_functions => no value => no value
display_errors => STDOUT => STDOUT
display_startup_errors => On => On
doc_root => no value => no value
docref_ext => no value => no value
docref_root => no value => no value
enable_dl => Off => Off
enable_post_data_reading => On => On
error_append_string => no value => no value
error_log => no value => no value
error_prepend_string => no value => no value
error_reporting => 22527 => 22527
expose_php => On => On
extension_dir => /usr/lib/php/extensions/no-debug-non-zts-20180731 => /usr/lib/php/extensions/no-debug-non-zts-20180731
file_uploads => On => On
hard_timeout => 2 => 2
highlight.comment => <font style="color: #FF8000">#FF8000</font> => <font style="color: #FF8000">#FF8000</font>
highlight.default => <font style="color: #0000BB">#0000BB</font> => <font style="color: #0000BB">#0000BB</font>
highlight.html => <font style="color: #000000">#000000</font> => <font style="color: #000000">#000000</font>
highlight.keyword => <font style="color: #007700">#007700</font> => <font style="color: #007700">#007700</font>
highlight.string => <font style="color: #DD0000">#DD0000</font> => <font style="color: #DD0000">#DD0000</font>
html_errors => Off => Off
ignore_repeated_errors => Off => Off
ignore_repeated_source => Off => Off
ignore_user_abort => Off => Off
implicit_flush => On => On
include_path => .: => .:
input_encoding => no value => no value
internal_encoding => no value => no value
log_errors => On => On
log_errors_max_len => 1024 => 1024
mail.add_x_header => Off => Off
mail.force_extra_parameters => no value => no value
mail.log => no value => no value
max_execution_time => 0 => 0
max_file_uploads => 20 => 20
max_input_nesting_level => 64 => 64
max_input_time => -1 => -1
max_input_vars => 1000 => 1000
memory_limit => 128M => 128M
open_basedir => no value => no value
output_buffering => 0 => 0
output_encoding => no value => no value
output_handler => no value => no value
post_max_size => 8M => 8M
precision => 14 => 14
realpath_cache_size => 4096K => 4096K
realpath_cache_ttl => 120 => 120
register_argc_argv => On => On
report_memleaks => On => On
report_zend_debug => Off => Off
request_order => GP => GP
sendmail_from => no value => no value
sendmail_path => /usr/sbin/sendmail -t -i => /usr/sbin/sendmail -t -i
serialize_precision => -1 => -1
short_open_tag => Off => Off
SMTP => localhost => localhost
smtp_port => 25 => 25
sys_temp_dir => no value => no value
syslog.facility => LOG_USER => LOG_USER
syslog.filter => no-ctrl => no-ctrl
syslog.ident => php => php
track_errors => Off => Off
unserialize_callback_func => no value => no value
upload_max_filesize => 2M => 2M
upload_tmp_dir => no value => no value
user_dir => no value => no value
user_ini.cache_ttl => 300 => 300
user_ini.filename => .user.ini => .user.ini
variables_order => GPCS => GPCS
xmlrpc_error_number => 0 => 0
xmlrpc_errors => Off => Off
zend.assertions => -1 => -1
zend.detect_unicode => On => On
zend.enable_gc => On => On
zend.multibyte => Off => Off
zend.script_encoding => no value => no value
zend.signal_check => Off => Off
....
xdebug
__ __ _ _
\ \ / / | | | |
\ V / __| | ___| |__ _ _ __ _
> < / _` |/ _ \ '_ \| | | |/ _` |
/ . \ (_| | __/ |_) | |_| | (_| |
/_/ \_\__,_|\___|_.__/ \__,_|\__, |
__/ |
|___/
Version => 3.0.3
Support Xdebug on Patreon, GitHub, or as a business: https://xdebug.org/support
Enabled Features<br/>(through 'xdebug.mode' setting)
Feature => Enabled/Disabled
Development Aids => ✔ enabled
Coverage => ✘ disabled
GC Stats => ✘ disabled
Profiler => ✘ disabled
Step Debugger => ✘ disabled
Tracing => ✘ disabled
Directive => Local Value => Master Value
xdebug.auto_trace => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.cli_color => 0 => 0
xdebug.client_discovery_header => no value => no value
xdebug.client_host => localhost => localhost
xdebug.client_port => 9003 => 9003
xdebug.cloud_id => no value => no value
xdebug.collect_assignments => Off => Off
xdebug.collect_includes => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.collect_params => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.collect_return => Off => Off
xdebug.collect_vars => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.connect_timeout_ms => 200 => 200
xdebug.coverage_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.default_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.discover_client_host => Off => Off
xdebug.dump.COOKIE => no value => no value
xdebug.dump.ENV => no value => no value
xdebug.dump.FILES => no value => no value
xdebug.dump.GET => no value => no value
xdebug.dump.POST => no value => no value
xdebug.dump.REQUEST => no value => no value
xdebug.dump.SERVER => no value => no value
xdebug.dump.SESSION => no value => no value
xdebug.dump_globals => On => On
xdebug.dump_once => On => On
xdebug.dump_undefined => Off => Off
xdebug.file_link_format => no value => no value
xdebug.filename_format => no value => no value
xdebug.force_display_errors => Off => Off
xdebug.force_error_reporting => 0 => 0
xdebug.gc_stats_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.gc_stats_output_name => gcstats.%p => gcstats.%p
xdebug.halt_level => 0 => 0
xdebug.idekey => no value => no value
xdebug.log => no value => no value
xdebug.log_level => 7 => 7
xdebug.max_nesting_level => 256 => 256
xdebug.max_stack_frames => -1 => -1
xdebug.mode => develop => develop
xdebug.output_dir => /var/tmp/ => /var/tmp/
xdebug.overload_var_dump => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.profiler_append => Off => Off
xdebug.profiler_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.profiler_output_name => cachegrind.out.%p => cachegrind.out.%p
xdebug.remote_autostart => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_connect_back => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_enable => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_host => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_log_level => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_mode => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_port => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.remote_timeout => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.scream => Off => Off
xdebug.show_error_trace => Off => Off
xdebug.show_exception_trace => Off => Off
xdebug.show_local_vars => Off => Off
xdebug.show_mem_delta => (setting removed in Xdebug 3) => (setting removed in Xdebug 3)
xdebug.start_upon_error => default => default
xdebug.start_with_request => default => default
xdebug.trace_enable_trigger => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_enable_trigger_value => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_format => 0 => 0
xdebug.trace_options => 0 => 0
xdebug.trace_output_dir => (setting renamed in Xdebug 3) => (setting renamed in Xdebug 3)
xdebug.trace_output_name => trace.%c => trace.%c
xdebug.trigger_value => no value => no value
xdebug.var_display_max_children => 128 => 128
xdebug.var_display_max_data => 512 => 512
xdebug.var_display_max_depth => 3 => 3
这是网络服务器 phpinfo() 中 headers 的输出，没有提及 xdebug。显然，当尝试通过网络服务器使用 xdebug 函数时，它们会抛出致命错误，因为函数未定义。
Build Date Dec 21 2020 21:31:03
Server API Apache 2.0 Handler
Virtual Directory Support disabled
Configuration File (php.ini) Path /etc
Loaded Configuration File /etc/php.ini
Scan this dir for additional .ini files (none)
Additional .ini files parsed (none)
PHP API 20180731
PHP Extension 20180731
Zend Extension 320180731
Zend Extension Build API320180731,NTS
PHP Extension Build API20180731,NTS
Debug Build no
Thread Safety disabled
Zend Signal Handling enabled
Zend Memory Manager enabled
Zend Multibyte Support provided by mbstring
IPv6 Support enabled
DTrace Support disabled
Registered PHP Streams https, ftps, compress.zlib, compress.bzip2, php, file, glob, data, http, ftp, phar
Registered Stream Socket Transports tcp, udp, unix, udg, ssl, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filters zlib.*, bzip2.*, convert.iconv.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk
Zend logoThis program makes use of the Zend Scripting Language Engine:
Zend Engine v3.3.24, Copyright (c) 1998-2018 Zend Technologies
对可能发生的事情有什么想法吗？
我已经看过大多数其他类似的问题，但没有运气。
用头撞墙几个小时，终于明白问题出在哪里了。
关于 xcode 未进行代码签名的错误消息：
Failed loading /usr/local/php/extensions/xdebug.so: dlopen(/usr/local/php/extensions/xdebug.so, 9): no suitable image found. Did find:
/usr/local/php/extensions/xdebug.so: code signature in (/usr/local/php/extensions/xdebug.so) not valid for use in process using Library Validation: mapped file has no cdhash, completely unsigned? Code has to be at least ad-hoc signed.
我能够使用我的 Apple Developer Certificate 对其进行代码签名。但是，此后消息更改为：
Failed loading /usr/local/php/extensions/xdebug.so: dlopen(/usr/local/php/extensions/xdebug.so, 9): no suitable image found. Did find:
/usr/local/php/extensions/xdebug.so: code signature in (/usr/local/php/extensions/xdebug.so) not valid for use in process using Library Validation: mapping process is a platform binary, but mapped file is not
事实证明，MacOS 11 需要对所有内容进行库验证。我的解决方案（如果您不知道自己在做什么，则不推荐）是在系统范围内禁用库验证以使其能够加载。
您可以使用以下命令来完成：
sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool true
然后您可以重新启动 apache，模块将加载，之后您可以使用
重新激活库验证sudo defaults write /Library/Preferences/com.apple.security.libraryvalidation.plist DisableLibraryValidation -bool false
调试愉快