Apache 2.2.27和PHP 5.5.12在Mac OS X 10.8.5编译安装过程:
在开始之前首先升级Xcode的组件: preferences => Downloads => 下载Command Line Tools包
然后进入Apache的源码包,对于大部分的源码包都可以使用下面这个指令来查看编译选项:
./configure --help
配置编译选项:
./configure --prefix=/Users/levin/dev/apache2.2.27 --enable-modules=most --enable-mods-shared=all
报错:
checking for APR-util... yes checking for gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.8.xctoolchain/usr/bin/cc checking whether the C compiler works... no configure: error: in `/Users/levin/Downloads/httpd-2.2.27': configure: error: C compiler cannot create executables See `config.log' for more details
上面的报错是指路径:
/Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.8.xctoolchain/usr/bin/cc
不存在
解决方法:
cd /Applications/Xcode.app/Contents/Developer/Toolchains sudo ln -s XcodeDefault.xctoolchain OSX10.8.xctoolchain
接着编译并安装:
make make install
编辑配置文件httpd.conf,一般修改监听端口、运行Apache的用户和组、服务器名称、开启gzip等配置。
进入安装好的目录启动Apache:
./bin/apachectl start
安装PHP
关于PHP编译选项可以参考: PHP: List of core configure options - Manual
./configure --prefix=/Users/levin/dev/php5.5.12 --with-apxs2=/Users/levin/dev/apache2.2.27/bin/apxs --with-config-file-path=/Users/levin/dev/php5.5.12/etc --with-openssl --with-zlib --enable-bcmath --with-bz2 --with-curl --enable-ftp --with-gd --enable-gd-native-ttf --with-mhash --enable-mbstring --enable-soap --enable-zip --enable-sockets --with-mysql=/usr/local/mysql-5.6.12-osx10.7-x86_64 --with-mysqli=/usr/local/mysql-5.6.12-osx10.7-x86_64/bin/mysql_config --with-iconv --with-pear --enable-opcache make
整个编译过程需要5-10分钟,视硬件配置而定,可以先去弄杯牛奶喝
发生错误:
Undefined symbols for architecture x86_64: "_res_9_init", referenced from: _zif_dns_get_mx in dns.o _zif_dns_get_record in dns.o _zif_dns_check_record in dns.o "_res_9_search", referenced from: _zif_dns_get_mx in dns.o _zif_dns_get_record in dns.o _zif_dns_check_record in dns.o "_res_9_dn_skipname", referenced from: _zif_dns_get_mx in dns.o _zif_dns_get_record in dns.o "_res_9_dn_expand", referenced from: _zif_dns_get_mx in dns.o _php_parserr in dns.o ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status make: *** [libs/libphp5.bundle] Error 1
解决:
export LDFLAGS=-lresolv
错误:
dyld: Library not loaded: libmysqlclient.18.dylib Referenced from: /Users/levin/Downloads/php-5.5.12/sapi/cli/php Reason: image not found ... make: *** [ext/phar/phar.php] Error 133
解决:
cd /usr/lib ln -s /usr/local/mysql-5.6.12-osx10.7-x86_64/lib/libmysqlclient.18.dylib libmysqlclient.18.dylib
重新编译并安装:
make clean && make make install
安装完成,此时需要从PHP的源码目录copy一份配置文件到安装目录的etc文件夹下面并改名为php.ini,需要更改PHP的配置时就使用该文件即可。

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

Key players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.


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