


linux - php7.0.13 installation is complete but the gd library does not have freetype
Linux novice, installed php 7.0.13 under red hat 7.0. After completion, there is no freetype in the gd extension in phoinfo.
Compile script
<code>./configure --with-apxs2=/usr/local/apache/bin/apxs --prefix=/usr/local/php --with-gd --with-freetype-dir=/usr/include/freetype2/freetype </code>
Freetype is installed using yum, and the location is /usr/include/freetype2/freetype. After the compilation is completed and php is installed, it seems that freetype is not installed. I tried it several times but it didn't work. I'm new to Linux and I don't know where the problem lies. Please help and take a look.
The picture below shows the gd library information in phpinfo. It can be seen that the gd library is installed.
Reply content:
Linux novice, installed php 7.0.13 under red hat 7.0. After completion, there is no freetype in the gd extension in phoinfo.
Compile script
<code>./configure --with-apxs2=/usr/local/apache/bin/apxs --prefix=/usr/local/php --with-gd --with-freetype-dir=/usr/include/freetype2/freetype </code>
Freetype is installed using yum, and the location is /usr/include/freetype2/freetype. After the compilation is completed and php is installed, it seems that freetype is not installed. I tried several times but it didn't work. I'm new to Linux and I don't know where the problem lies. Please help and take a look.
The picture below shows the gd library information in phpinfo. It can be seen that the gd library is installed.
I wrote an installation reminder [cetnos 7] before and pasted it directly.
freetype screenshot:
Install dependency packages
yum install libxml2 libxml2-devel openssl openssl-devel bzip2 bzip2-devel libcurl libcurl-devel libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel gmp gmp-devel libmcrypt libmcrypt-devel readline readline-devel libxslt libxslt-devel
Install php
configure
./configure --prefix=/alidata/server/php-7.0.5 --enable-fpm --with-fpm-user=nginx --with-fpm-group=nginx --enable-inline-optimization --disable-debug --disable-rpath --enable-shared --enable-soap --with-libxml-dir --with-xmlrpc --with-openssl --with-mcrypt --with-mhash --with-pcre-regex --with-sqlite3 --with-zlib --enable-bcmath --with-iconv=/usr/local --with-bz2 --enable-calendar --with-curl --with-cdb --enable-dom --enable-exif --enable-fileinfo --enable-filter --with-pcre-dir --enable-ftp --with-gd --with-openssl-dir --with-jpeg-dir --with-png-dir --with-zlib-dir --with-freetype-dir --enable-gd-native-ttf --enable-gd-jis-conv --with-gettext --with-gmp --with-mhash --enable-json --enable-mbstring --enable-mbregex --enable-mbregex-backtrack --with-libmbfl --with-onig --enable-pdo --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-zlib-dir --with-pdo-sqlite --with-readline --enable-session --enable-shmop --enable-simplexml --enable-sockets --enable-sysvmsg --enable-sysvsem --enable-sysvshm --enable-wddx --with-libxml-dir --with-xsl --enable-zip --enable-mysqlnd-compression-support --with-pear --enable-opcache
missing libiconv
wget http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.14.tar.gz tar -zxvf libiconv-1.14.tar.gz cd libiconv-1.14.1 ./configure --prefix=/usr/local make && make install
Attention
The
--prefix
here is consistent with the--with-iconv
value in phpChange the file under the installation package:
srclib/stdio.in.h
_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
to
#if defined(__GLIBC__) && !defined(__UCLIBC__) && !__GLIBC_PREREQ(2, 16) _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead"); #endif
Insufficient memory when compiling
virtual memory exhausted: Cannot allocate memory make: *** [ext/fileinfo/libmagic/apprentice.lo] Error 1
Solution: Add swap memory
#1.进入目录 cd /var #2.获取要增加的SWAP文件块(这里以1GB为例) dd if=/dev/zero of=swapfile bs=1024 count=1038336 #3.创建SWAP文件 /sbin/mkswap swapfile #4.激活SWAP文件 /sbin/swapon swapfile #5.查看SWAP信息是否正确 /sbin/swapon -s #6.添加到fstab文件中让系统引导时自动启动 echo "/var/swapfile swap swap defaults 0 0" >>/etc/fstab
Operation example
<code>[root@iZ25uog2aivZ var]# dd if=/dev/zero of=swapfile bs=1024 count=1038336 1038336+0 records in 1038336+0 records out 1063256064 bytes (1.1 GB) copied, 19.287 s, 55.1 MB/s [root@iZ25uog2aivZ var]# /sbin/mkswap swapfile Setting up swapspace version 1, size = 1038332 KiB no label, UUID=59e3b114-ed70-4d64-af01-2d02873fa358 [root@iZ25uog2aivZ var]# /sbin/swapon swapfile swapon: /var/swapfile: insecure permissions 0644, 0600 suggested. [root@iZ25uog2aivZ var]# /sbin/swapon -s Filename Type Size Used Priority /var/swapfile file 1038332 0 -1 [root@iZ25uog2aivZ var]# echo "/var/swapfile swap swap defaults 0 0" >>/etc/fstab [root@iZ25uog2aivZ var]# free -m total used free shared buffers cached Mem: 992 923 69 81 1 309 -/+ buffers/cache: 611 381 Swap: 1013 0 1013 [root@iZ25uog2aivZ var]# </code>
Compile and install
$ make && make install
It takes a long time to make, so be patient
Configure php-fpm
$ cp php.ini-production /etc/php.ini $ cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf $ cp /usr/local/php/etc/php-fpm.d/www.conf.default /usr/local/php/etc/php-fpm.d/www.conf $ cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm $ chmod +x /etc/init.d/php-fpm
Reference

Setting session cookie parameters in PHP can be achieved through the session_set_cookie_params() function. 1) Use this function to set parameters, such as expiration time, path, domain name, security flag, etc.; 2) Call session_start() to make the parameters take effect; 3) Dynamically adjust parameters according to needs, such as user login status; 4) Pay attention to setting secure and httponly flags to improve security.

The main purpose of using sessions in PHP is to maintain the status of the user between different pages. 1) The session is started through the session_start() function, creating a unique session ID and storing it in the user cookie. 2) Session data is saved on the server, allowing data to be passed between different requests, such as login status and shopping cart content.

How to share a session between subdomains? Implemented by setting session cookies for common domain names. 1. Set the domain of the session cookie to .example.com on the server side. 2. Choose the appropriate session storage method, such as memory, database or distributed cache. 3. Pass the session ID through cookies, and the server retrieves and updates the session data based on the ID.

HTTPS significantly improves the security of sessions by encrypting data transmission, preventing man-in-the-middle attacks and providing authentication. 1) Encrypted data transmission: HTTPS uses SSL/TLS protocol to encrypt data to ensure that the data is not stolen or tampered during transmission. 2) Prevent man-in-the-middle attacks: Through the SSL/TLS handshake process, the client verifies the server certificate to ensure the connection legitimacy. 3) Provide authentication: HTTPS ensures that the connection is a legitimate server and protects data integrity and confidentiality.

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.


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