linux下apache+php安装常见问题
configure: error: Unable to find libgd.(a|so)
如果使用的是ubuntu或debian就很简单了，直接sudo apt-get install apache2 libapache2-mod-php5 php5 php5-gd 就基本上搞定，但是用源代码安装还是很麻烦～
wget http://www.boutell.com/gd/http/gd-2.0.11.tar.gz
tar zxvf gd-2.0.11.tar.gz
cd gd-2.0.11
sudo ./configure --prefix=/usr/local/gd2
sudo make
sudo make install
再php:~/:./configure …… --with-gd=/usr/local/gd2 ……
以下是转载的,而且都是基于yum install或者apt-get的。
1) Configure: error: xml2-config not found. Please check your libxml2 installation.
Solutions :
Quote:
#yum install
libxml2
libxml2-devel
(For Redhat & Fedora)
# aptitude install lib
xml2
-dev (For ubuntu)
2) Checking for pkg-config… /usr/bin/pkg-config
configure: error: Cannot find OpenSSL’s <evp.h>
Solutions :
Quote:
#yum install
openssl
openssl-devel
3) Configure: error: Please reinstall the BZip2 distribution
Solutions :
Quote:
# yum install
bzip2
bzip2-devel
4) Configure: error: Please reinstall the libcurl distribution -
easy.h should be in <curl-dir>/include/curl/
Solutions :
Quote:
# yum install
curl
curl-devel (For Redhat & Fedora)
# install libcurl4-gnutls-dev (For Ubuntu)
5) Configure: error: libjpeg.(also) not found.
Solutions :
Quote:
# yum install
libjpeg
libjpeg-devel
6) Configure: error: libpng.(also) not found.
Solutions :
Quote:
# yum install
libpng
libpng-devel
7) Configure: error: freetype.h not found.
Solutions :
Quote:
#yum install freetype-devel
8) Configure: error: Unable to locate gmp.h
Solutions :
Quote:
# yum install gmp-devel
9) Configure: error: Cannot find MySQL header files under /usr.
Note that the MySQL client library is not bundled anymore!
Solutions :
Quote:
# yum install mysql-devel &n
例：
要求匹配标题
<div class="detail-hd">
<h3>
五皇冠 2010春装新品时尚T恤 长袖 女装长款T恤 热卖韩版长T 特价
</h3>
$reg="|<div class=\"detail-hd\">[\n\r\t]*<h3>[\n\r\t]*(.*)[\n\r\t]*</h3>|";
pre ......
i 最常见的,大小写忽略模式. m (PCRE_MULTILINE) 多行模式.默认情况下,PCRE将目标字符串作为单一的一"行"字符所组成的（甚至其中包含有换行符也是如此)."行起始"元字符（^）仅仅匹配字符串的起始,"行结束"元字符（$）仅仅匹配字符串的结束，或者最后一个字符是换行符时其前面（除非设定了 D 修正符）.这和 Perl 是一样的.� ......
