PHP extension module unpacks binary data in Erlangextterm format (generated by term_to_binary). 1. Introduction: Erlang extension term & #26684 has been introduced in Erlang's term_to_binary data packaging system; (Erlangexternaltermforma PHP extension module unpacks (generated by term_to_binary) binary data in Erlang ext term format
1. introduction the role of Erlang extended term format (Erlang external term format) binary has been introduced in Erlang's term_to_binary data packaging system,
Some students want to use the term_to_binary function package to store Erlang data into the database in binary format, and then use PHP to read and decompress the package into a PHP array.
To solve the problems encountered in the above application scenarios,
The peb (Php-Erlang Bridge) extension writes the binary extension similar to the erlang: binary_to_term/1 function,
It can be understood as the binary_to_term of PHP.
2. Introduction to binary extensions
2.1. the binary extension exports the following three functions:
- Array binary_to_term (string $ binary) returns the array after unpacking.
- Int binary_errno () returns the error code generated by the last call of binary_to_term. 0 indicates no error, and 1 indicates the unsupported data type in binary content.
- String binary_error () returns the error message generated by the last call of binary_to_term. If no error exists, it is null.
2.2. binary extension module:
Http://download.csdn.net/download/u011471961/6447631
3. install binary extension
Install On * nux:
Step 1:
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Unzip binary.zip
Cd./binary
Phpize or phpize5
Step 2:
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Before executing configure, check the Erlang installation directory and php-config path. The configure below is just an example and can be modified according to the actual path.
Install it in linux:
. /Configure CC = "gcc-L/usr/local/lib/erlang/lib/erl_interface-3.7.11/lib-I/usr/local/lib/erlang/lib/erl_interface-3.7.11/include "-- enable-binary -- with-php-config =/usr/local/php/bin/php-config
OR:
. /Configure CC = "gcc-L/usr/local/lib/erlang/lib/erl_interface-3.7.11/lib-I/usr/local/lib/erlang/lib/erl_interface-3.7.11/include "-- enable-binary -- with-php-config =/usr/bin/php-config5
Install on an Apple computer:
Sudo MACOSX_DEPLOYMENT_TARGET = 10.7 CFLAGS = "-arch i386-arch x86_64-g-OS-pipe-no-cpp-precomp" CCFLAGS = "-arch i386-arch x86_64-g-OS- pipe "CXXFLAGS ="-arch i386-arch x86_64-g-OS-pipe "LDFLAGS ="-arch i386-arch x86_64-bind_at_load ". /configure CC = "gcc-m32-L/usr/local/lib/erlang/lib/erl_interface-3.7.6/lib-I/usr/local/lib/erlang/lib/erl_interface-3.7.6/include "-- enable-binary
Step 3:
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Make
Step 4:
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Make test
Step 5:
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Make install
Step 6:
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Modify the php. ini file:
Extension = binary. so
OR:
Extension =/path/to/binary. so
Step 7:
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Restart php-cgi or apache
Step 8:
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Use the phpinfo () function or command (php-m) to check whether the binary module is loaded.
4. binary extended application example
4.1 create a mysql data table
CREATE TABLE IF NOT EXISTS `test` ( `id` int(11) NOT NULL AUTO_INCREMENT, `bin` varbinary(255) NOT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
4.2 write data on Erlang
Test ()-> Data = [{name, rolong}, {phone, 888888}], Bin = term_to_binary (Data ), % the interface for writing data to the database depends on your own situation. db: execute (<"insert test (bin) values (~ S); ">>, [Bin]).
4.3 read and decompress the package in PHP into a PHP array
GetOne ($ SQL); $ data = binary_to_term ($ bin); echo''; var_dump($data); echo '
';
Output
array(1) { [0]=> array(2) { [0]=> array(2) { [0]=> string(4) "name" [1]=> string(6) "rolong" } [1]=> array(2) { [0]=> string(5) "phone" [1]=> int(888888) } }}
4. summary in the binary extension module, some of the less-used data types are currently supported. if you have special requirements, you can modify the source code.
Erlang provides a C interface for data packaging and unpacking, refer to http://www.erlang.org/doc/apps/erl_interface/index.html
