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~/public_html/php-5.3.13/ext> wget /get/vld-0.11.2.tgz
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~/public_html/php-5.3.13/ext> tar zxvf vld-0.11.2.tgz
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~/public_html/php-5.3.13/ext> cd vld-0.11.2/
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接下来编译安装vld扩展:
~/public_html/php-5.3.13/ext/vld-0.11.2> phpize
~/public_html/php-5.3.13/ext/vld-0.11.2> ./configure –with-php-config=/usr/local/services/php/bin/php-config –enable-vld
~/public_html/php-5.3.13/ext/vld-0.11.2> make
~/public_html/php-5.3.13/ext/vld-0.11.2> sudo make install
Installing shared extensions:/usr/local/services/php/lib/php/extensions/no-debug-non-zts-0626/
最后将生成的vld.so复制到extension_dir目录下:
~/public_html/php-5.3.13/ext/vld-0.11.2> cd /usr/local/services/php/lib/php/extensions/no-debug-non-zts-0626/
/usr/local/services/php/lib/php/extensions/no-debug-non-zts-0626> sudo cp vld.so /usr/local/services/php/extensions/
然后修改php.ini文件,添加如下配置:
extension=vld.so
接下来创建test.php文件:
<?php
$a = “hello world”;
echo $a . PHP_EOL;
使用cli来执行,查看生成的opcode:
~/public_html> php -dvld.active=1 test.php
Finding entry points
Branch analysis from position: 0
Return found
filename: /home/zhanhailiang/public_html/test.php
function name: (null)
number of ops: 4
compiled vars: !0 = $a
line# * op fetchext return operands
———————————————————————————
30 > ASSIGN !0, ‘hello+world’
51CONCAT ~1!0, ‘%0A’
2ECHO~1
63 > RETURN 1
branch: # 0; line:3- 6; sop:0; eop:3
path #1: 0,
hello world
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