将PHP程序中返回的JSON格式数据用gzip压缩输出的方法
1.使用压缩与不使用压缩的HTTP输出比较 2.开启gzip 利用apache mod_deflate module 开启gzip 开启方法: sudo a2enmod deflatesudo /etc/init.d/apache2 restart 关闭方法: sudo a2dismod deflatesudo /etc/init.d/apache2 restart 3.设置需要gzip压缩输出
1.使用压缩与不使用压缩的HTTP输出比较
2.开启gzip
利用apache mod_deflate module 开启gzip
开启方法:
sudo a2enmod deflate sudo /etc/init.d/apache2 restart
关闭方法:
sudo a2dismod deflate sudo /etc/init.d/apache2 restart
3.设置需要gzip压缩输出的类型
json的输出类型是application/json,所以可以这样设置
在httpd.conf的
<IfModule mod_deflate.c> AddOutputFilterByType DEFLATE application/json </IfModule>
<?php $data = array( array('name'=>'one','value'=>1), array('name'=>'two','value'=>2), array('name'=>'three','value'=>3), array('name'=>'four','value'=>4), array('name'=>'five','value'=>5), array('name'=>'six','value'=>6), array('name'=>'seven','value'=>7), array('name'=>'eight','value'=>8), array('name'=>'nine','value'=>9), array('name'=>'ten','value'=>10), ); header('content-type:application/json'); echo json_encode($data); ?>
设置gzip前输出:
设置gzip后输出:
4.单个json使用gzip压缩输出
设置AddOutputFilterByType DEFLATE application/json后,所有json格式的数据输出都将使用gzip压缩输出。
如果只想某一个json使用gzip压缩输出,其他不需要,可以使用ob_start();方法来实现。
首先不需要设置AddOutputFilterByType,然后在代码最开始位置加入ob_start('ob_gzhandler');
<?php ob_start('ob_gzhandler'); $data = array( array('name'=>'one','value'=>1), array('name'=>'two','value'=>2), array('name'=>'three','value'=>3), array('name'=>'four','value'=>4), array('name'=>'five','value'=>5), array('name'=>'six','value'=>6), array('name'=>'seven','value'=>7), array('name'=>'eight','value'=>8), array('name'=>'nine','value'=>9), array('name'=>'ten','value'=>10), ); header('content-type:application/json'); echo json_encode($data); ?>

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