change default PHP version on MAC

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#php #mac

本文指导如何在使用MAMP作为本地开发环境时，通过编辑.bash_profile文件配置PHP路径，实现对PHP版本的选择与切换。

# current version

which php

# edit .bash_profile

sudo vim ~/.bash_profile

# add the following line
## export PATH=”/Applications/MAMP/bin/php/php5.6.10/bin:$PATH”

# refesh the .bash_profile

. .bash_profile

# view the change

which php
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PHP logo PHP Version 5.6.40 System Linux yfw.szrengjing.com 4.18.0-348.7.1.el8_5.x86_64 #1 SMP Wed Dec 22 13:25:12 UTC 2021 x86_64 Build Date May 12 2020 15:26:41 Configure Command './configure' '--prefix=/www/server/php/56' '--with-config-file-path=/www/server/php/56/etc' '--enable-fpm' '--with-fpm-user=www' '--with-fpm-group=www' '--with-mysql=mysqlnd' '--with-mysqli=mysqlnd' '--with-pdo-mysql=mysqlnd' '--with-iconv-dir' '--with-freetype-dir=/usr/local/freetype' '--with-jpeg-dir' '--with-png-dir' '--with-zlib' '--with-libxml-dir=/usr' '--enable-xml' '--disable-rpath' '--enable-bcmath' '--enable-shmop' '--enable-sysvsem' '--enable-inline-optimization' '--with-curl=/usr/local/curl' '--enable-mbregex' '--enable-mbstring' '--with-mcrypt' '--enable-ftp' '--with-gd' '--enable-gd-native-ttf' '--with-openssl=/usr/local/openssl' '--with-mhash' '--enable-pcntl' '--enable-sockets' '--with-xmlrpc' '--enable-zip' '--enable-soap' '--with-gettext' '--disable-fileinfo' '--enable-opcache' '--enable-intl' Server API FPM/FastCGI Virtual Directory Support disabled Configuration File (php.ini) Path /www/server/php/56/etc Loaded Configuration File /www/server/php/56/etc/php.ini Scan this dir for additional .ini files (none) Additional .ini files parsed (none) PHP API 20131106 PHP Extension 20131226 Zend Extension 220131226 Zend Extension Build API220131226,NTS PHP Extension Build API20131226,NTS Debug Build no Thread Safety disabled Zend Signal Handling disabled Zend Memory Manager enabled Zend Multibyte Support provided by mbstring IPv6 Support enabled DTrace Support disabled Registered PHP Streams https, ftps, compress.zlib, php, file, glob, data, http, ftp, phar, zip, smb, compress.zstd Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, tls, tlsv1.0, tlsv1.1, tlsv1.2 Registered Stream Filters zlib.*, convert.iconv.*, mcrypt.*, mdecrypt.*, 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 v2.6.0, Copyright (c) 1998-2016 Zend Technologies with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies with Zend Guard Loader v3.3, Copyright (c) 1998-2014, by Zend Technologies Configuration bcmath BCMath support enabled Directive Local Value Master Value bcmath.scale 0 0 cgi-fcgi php-fpm active Directive Local Value Master Value cgi.discard_path 0 0 cgi.fix_pathinfo 1 1 cgi.force_redirect 1 1 cgi.nph 0 0 cgi.redirect_status_env no value no value cgi.rfc2616_headers 0 0 fastcgi.error_header no value no value fastcgi.logging 1 1 fpm.config no value no value Core PHP Version 5.6.40 Directive Local Value Master Value allow_url_fopen On On allow_url_include Off Off always_populate_raw_post_data 0 0 arg_separator.input & & arg_separator.output & & asp_tags Off Off 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 passthru,proc_open,putenv,exec,system,chroot,chgrp,chown,shell_exec,popen,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,proc_open,putenv,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv passthru,proc_open,putenv,exec,system,chroot,chgrp,chown,shell_exec,popen,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,proc_open,putenv,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv display_errors Off Off display_startup_errors Off Off 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 32759 32759 exit_on_timeout Off Off expose_php Off Off extension_dir /www/server/php/56/lib/php/extensions/no-debug-non-zts-20131226 /www/server/php/56/lib/php/extensions/no-debug-non-zts-20131226 file_uploads On On highlight.comment #FF8000 #FF8000 highlight.default #0000BB #0000BB highlight.html #000000 #000000 highlight.keyword #007700 #007700 highlight.string #DD0000 #DD0000 html_errors On On ignore_repeated_errors Off Off ignore_repeated_source Off Off ignore_user_abort Off Off implicit_flush Off Off include_path .:/www/server/php/56/lib/php .:/www/server/php/56/lib/php 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 On On mail.force_extra_parameters no value no value mail.log no value no value max_execution_time 300 300 max_file_uploads 20 20 max_input_nesting_level 64 64 max_input_time 60 60 max_input_vars 1000 1000 memory_limit 256M 256M open_basedir /www/wwwroot/szrengjing.com/:/tmp/ no value output_buffering 4096 4096 output_encoding no value no value output_handler no value no value post_max_size 100M 100M precision 14 14 realpath_cache_size 16K 16K realpath_cache_ttl 120 120 register_argc_argv Off Off report_memleaks On On report_zend_debug On On request_order GP GP sendmail_from no value no value sendmail_path /usr/sbin/sendmail -t -i /usr/sbin/sendmail -t -i serialize_precision 17 17 short_open_tag On On SMTP localhost localhost smtp_port 25 25 sql.safe_mode Off Off sys_temp_dir no value no value track_errors Off Off unserialize_callback_func no value no value upload_max_filesize 100M 100M 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.detect_unicode On On zend.enable_gc On On zend.multibyte Off Off zend.script_encoding no value no value ctype ctype functions enabled curl cURL support enabled cURL Information 7.70.0 Age 6 Features AsynchDNS Yes CharConv No Debug No GSS-Negotiate No IDN No IPv6 Yes krb4 No Largefile Yes libz Yes NTLM Yes NTLMWB Yes SPNEGO No SSL Yes SSPI No TLS-SRP Yes Protocols dict, file, ftp, ftps, gopher, http, https, imap, imaps, pop3, pop3s, rtsp, smb, smbs, smtp, smtps, telnet, tftp Host x86_64-pc-linux-gnu SSL Version OpenSSL/1.0.2u ZLib Version 1.2.11 date date/time support enabled "Olson" Timezone Database Version 2016.10 Timezone Database internal Default timezone PRC Directive Local Value Master Value date.default_latitude 31.7667 31.7667 date.default_longitude 35.2333 35.2333 date.sunrise_zenith 90.583333 90.583333 date.sunset_zenith 90.583333 90.583333 date.timezone PRC PRC dom DOM/XML enabled DOM/XML API Version 20031129 libxml Version 2.9.7 HTML Support enabled XPath Support enabled XPointer Support enabled Schema Support enabled RelaxNG Support enabled ereg Regex Library Bundled library enabled event Event support enabled Sockets support enabled Debug support disabled Extra functionality support including HTTP, DNS, and RPC enabled OpenSSL support enabled Thread safety support disabled Extension version 3.0.8 libevent2 headers version 2.1.8-stable exif EXIF Support enabled EXIF Version 1.4 $Id: 1c8772f76be691b7b3f77ca31eb788a2abbcefe5 $ Supported EXIF Version 0220 Supported filetypes JPEG,TIFF Directive Local Value Master Value exif.decode_jis_intel JIS JIS exif.decode_jis_motorola JIS JIS exif.decode_unicode_intel UCS-2LE UCS-2LE exif.decode_unicode_motorola UCS-2BE UCS-2BE exif.encode_jis no value no value exif.encode_unicode ISO-8859-15 ISO-8859-15 fileinfo fileinfo support enabled version 1.0.5 libmagic 517 filter Input Validation and Filtering enabled Revision $Id: 5b79667bd9a68977a9b4f7505223a8e216e04908 $ Directive Local Value Master Value filter.default unsafe_raw unsafe_raw filter.default_flags no value no value ftp FTP support enabled gd GD Support enabled GD Version bundled (2.1.0 compatible) FreeType Support enabled FreeType Linkage with freetype FreeType Version 2.9.1 GIF Read Support enabled GIF Create Support enabled JPEG Support enabled libJPEG Version 6b PNG Support enabled libPNG Version 1.6.34 WBMP Support enabled XBM Support enabled Directive Local Value Master Value gd.jpeg_ignore_warning 0 0 gettext GetText Support enabled hash hash support enabled Hashing Engines md2 md4 md5 sha1 sha224 sha256 sha384 sha512 ripemd128 ripemd160 ripemd256 ripemd320 whirlpool tiger128,3 tiger160,3 tiger192,3 tiger128,4 tiger160,4 tiger192,4 snefru snefru256 gost gost-crypto adler32 crc32 crc32b fnv132 fnv1a32 fnv164 fnv1a64 joaat haval128,3 haval160,3 haval192,3 haval224,3 haval256,3 haval128,4 haval160,4 haval192,4 haval224,4 haval256,4 haval128,5 haval160,5 haval192,5 haval224,5 haval256,5 iconv iconv support enabled iconv implementation glibc iconv library version 2.28 Directive Local Value Master Value iconv.input_encoding no value no value iconv.internal_encoding no value no value iconv.output_encoding no value no value imagick imagick module enabled imagick module version 3.4.4 imagick classes Imagick, ImagickDraw, ImagickPixel, ImagickPixelIterator, ImagickKernel Imagick compiled with ImageMagick version ImageMagick 7.1.0-16 Q16-HDRI x86_64 2021-11-21 https://imagemagick.org Imagick using ImageMagick library version ImageMagick 7.1.0-16 Q16-HDRI x86_64 2021-11-21 https://imagemagick.org ImageMagick copyright (C) 1999-2021 ImageMagick Studio LLC ImageMagick release date 2021-11-21 ImageMagick number of supported formats: 249 ImageMagick supported formats 3FR, 3G2, 3GP, A, AAI, AI, APNG, ART, ARW, ASHLAR, AVI, AVS, B, BGR, BGRA, BGRO, BMP, BMP2, BMP3, BRF, C, CAL, CALS, CANVAS, CAPTION, CIN, CIP, CLIP, CMYK, CMYKA, CR2, CR3, CRW, CUBE, CUR, CUT, DATA, DCM, DCR, DCRAW, DCX, DDS, DFONT, DNG, DPX, DXT1, DXT5, EPDF, EPI, EPS, EPS2, EPS3, EPSF, EPSI, EPT, EPT2, EPT3, ERF, FARBFELD, FAX, FF, FILE, FITS, FL32, FLV, FRACTAL, FTP, FTS, G, G3, G4, GIF, GIF87, GRADIENT, GRAY, GRAYA, GROUP4, HALD, HDR, HISTOGRAM, HRZ, HTM, HTML, HTTP, HTTPS, ICB, ICO, ICON, IIQ, INFO, INLINE, IPL, ISOBRL, ISOBRL6, JNG, JNX, JPE, JPEG, JPG, JPS, JSON, K, K25, KDC, LABEL, M, M2V, M4V, MAC, MAP, MASK, MAT, MATTE, MEF, MIFF, MKV, MNG, MONO, MOV, MP4, MPC, MPEG, MPG, MRW, MSL, MSVG, MTV, MVG, NEF, NRW, NULL, O, ORA, ORF, OTB, OTF, PAL, PALM, PAM, PANGO, PATTERN, PBM, PCD, PCDS, PCL, PCT, PCX, PDB, PDF, PDFA, PEF, PES, PFA, PFB, PFM, PGM, PGX, PHM, PICON, PICT, PIX, PJPEG, PLASMA, PNG, PNG00, PNG24, PNG32, PNG48, PNG64, PNG8, PNM, POCKETMOD, PPM, PS, PS2, PS3, PSB, PSD, PTIF, PWP, R, RADIAL-GRADIENT, RAF, RAS, RAW, RGB, RGB565, RGBA, RGBO, RGF, RLA, RLE, RMF, RW2, SCR, SCREENSHOT, SCT, SFW, SGI, SHTML, SIX, SIXEL, SPARSE-COLOR, SR2, SRF, STEGANO, SUN, SVG, SVGZ, TEXT, TGA, THUMBNAIL, TIFF, TIFF64, TILE, TIM, TM2, TTC, TTF, TXT, UBRL, UBRL6, UIL, UYVY, VDA, VICAR, VID, VIFF, VIPS, VST, WBMP, WEBM, WEBP, WMV, WPG, X, X3F, XBM, XC, XCF, XPM, XPS, XV, XWD, Y, YAML, YCbCr, YCbCrA, YUV Directive Local Value Master Value imagick.locale_fix 0 0 imagick.progress_monitor 0 0 imagick.skip_version_check 0 0 intl Internationalization support enabled version 1.1.0 ICU version 60.3 ICU Data version 60.3 Directive Local Value Master Value intl.default_locale no value no value intl.error_level 0 0 intl.use_exceptions 0 0 json json support enabled json version 1.2.1 libsmbclient Version 1.0.6 libxml libXML support active libXML Compiled Version 2.9.7 libXML Loaded Version 20907 libXML streams enabled mbstring Multibyte Support enabled Multibyte string engine libmbfl HTTP input encoding translation disabled libmbfl version 1.3.2 mbstring extension makes use of "streamable kanji code filter and converter", which is distributed under the GNU Lesser General Public License version 2.1. Multibyte (japanese) regex support enabled Multibyte regex (oniguruma) backtrack check On Multibyte regex (oniguruma) version 5.9.5 Directive Local Value Master Value mbstring.detect_order no value no value mbstring.encoding_translation Off Off mbstring.func_overload 0 0 mbstring.http_input no value no value mbstring.http_output no value no value mbstring.http_output_conv_mimetypes ^(text/|application/xhtml\+xml) ^(text/|application/xhtml\+xml) mbstring.internal_encoding no value no value mbstring.language neutral neutral mbstring.strict_detection Off Off mbstring.substitute_character no value no value mcrypt mcrypt support enabled mcrypt_filter support enabled Version 2.5.8 Api No 20021217 Supported ciphers cast-128 gost rijndael-128 twofish arcfour cast-256 loki97 rijndael-192 saferplus wake blowfish-compat des rijndael-256 serpent xtea blowfish enigma rc2 tripledes Supported modes cbc cfb ctr ecb ncfb nofb ofb stream Directive Local Value Master Value mcrypt.algorithms_dir no value no value mcrypt.modes_dir no value no value memcached memcached support enabled Version 2.2.0 libmemcached version 1.0.18 SASL support yes Session support yes igbinary support no json support no msgpack support no Directive Local Value Master Value memcached.compression_factor 1.3 1.3 memcached.compression_threshold 2000 2000 memcached.compression_type fastlz fastlz memcached.serializer php php memcached.sess_binary 0 0 memcached.sess_connect_timeout 1000 1000 memcached.sess_consistent_hash 0 0 memcached.sess_lock_expire 0 0 memcached.sess_lock_max_wait 0 0 memcached.sess_lock_wait 150000 150000 memcached.sess_locking 1 1 memcached.sess_number_of_replicas 0 0 memcached.sess_prefix memc.sess.key. memc.sess.key. memcached.sess_randomize_replica_read 0 0 memcached.sess_remove_failed 0 0 memcached.sess_sasl_password no value no value memcached.sess_sasl_username no value no value memcached.store_retry_count 2 2 memcached.use_sasl 0 0 mhash MHASH support Enabled MHASH API Version Emulated Support mysql MySQL Support enabled Active Persistent Links 0 Active Links 0 Client API version mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $ Directive Local Value Master Value mysql.allow_local_infile On On mysql.allow_persistent On On mysql.connect_timeout 60 60 mysql.default_host no value no value mysql.default_password no value no value mysql.default_port no value no value mysql.default_socket no value no value mysql.default_user no value no value mysql.max_links Unlimited Unlimited mysql.max_persistent Unlimited Unlimited mysql.trace_mode Off Off mysqli MysqlI Support enabled Client API library version mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $ Active Persistent Links 0 Inactive Persistent Links 0 Active Links 0 Directive Local Value Master Value mysqli.allow_local_infile On On mysqli.allow_persistent On On mysqli.default_host no value no value mysqli.default_port 3306 3306 mysqli.default_pw no value no value mysqli.default_socket no value no value mysqli.default_user no value no value mysqli.max_links Unlimited Unlimited mysqli.max_persistent Unlimited Unlimited mysqli.reconnect Off Off mysqli.rollback_on_cached_plink Off Off mysqlnd mysqlnd enabled Version mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $ 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_sha256_password API Extensions pdo_mysql,mysqli,mysql mysqlnd statistics bytes_sent 90861536 bytes_received 394494535 packets_sent 1356160 packets_received 6262207 protocol_overhead_in 25048828 protocol_overhead_out 5424640 bytes_received_ok_packet 0 bytes_received_eof_packet 0 bytes_received_rset_header_packet 5709357 bytes_received_rset_field_meta_packet 0 bytes_received_rset_row_packet 3386087 bytes_received_prepare_response_packet 153977064 bytes_received_change_user_packet 227294569 packets_sent_command 665079 packets_received_ok 0 packets_received_eof 0 packets_received_rset_header 634373 packets_received_rset_field_meta 0 packets_received_rset_row 645578 packets_received_prepare_response 2273832 packets_received_change_user 2682422 result_set_queries 627873 non_result_set_queries 17703 no_index_used 47526 bad_index_used 0 slow_queries 0 buffered_sets 627873 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 2054549 rows_fetched_from_server_ps 0 rows_buffered_from_client_normal 2054549 rows_buffered_from_client_ps 0 rows_fetched_from_client_normal_buffered 2053367 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
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在微服务架构里，配置中心相当于所有服务的"指挥中心"，把散落在各处的配置项统一收拢管理。而配置中心能让所有服务实时获取最新配置，就像给每个服务装了遥控器，改个参数值都不用重启服务。毕竟PHP天生适合快速迭代，加上配置中心的动态配置能力，简直是为业务频繁变动的场景量身定制的。不过要提醒的是，配置项命名必须规范。我们初期踩过坑，不同团队用不同的命名风格，有的用驼峰有的用下划线，查找配置时特别混乱。说到具体实践，我们团队现在把配置分为三类：静态配置写在代码里，环境配置交给配置中心，动态配置通过管理界面实时调整。
MySQL 教程（超详细，零基础可学、第一篇）
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MySQL 是一个关系型数据库管理系统，由瑞典 MySQL AB 公司开发，目前属于 Oracle 公司。MySQL 是一种关联数据库管理系统，关联数据库将数据保存在不同的表中，而不是将所有数据放在一个大仓库内，这样就增加了速度并提高了灵活性。MySQL 是开源的，目前隶属于 Oracle 旗下产品。MySQL 支持大型的数据库。可以处理拥有上千万条记录的大型数据库。MySQL 使用标准的 SQL 数据语言形式。MySQL 可以运行于多个系统上，并且支持多种语言。
change default python version
02-08
如果你想改变你的默认 Python 版本，你可以使用 update-alternatives 命令来实现。 使用以下命令可以查看系统中可用的 Python 版本： ``` update-alternatives --list python ``` 然后使用以下命令来选择一个默认...
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