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php http_build_query 实现教程

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Release: 2016-06-13 11:17:28
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php http_build_query 实现教程  

http_build_query
( PHP 5中)

http_build_query -生成URL编码查询字符串

描述
字符串http_build_query (数组$ formdata [ ,字符串$ numeric_prefix [ ,字符串$ arg_separator ] ] )
生成一个URL编码的查询字符串从联想(或索引)阵列提供。

参数

formdata
可能是一个数组或对象包含属性。

数组的形式可能是一个简单的一维结构,或一个数组的数组(谁也可能包含其他的阵列) 。

numeric_prefix
如果数字指标用于基础陈列和提供这个参数,这将是prepended的数字索引内容的基础陈列只。

这是法律允许的变量名时,数据解码用PHP或其他CGI应用程序上。

arg_separator
arg_separator.output用于单独的论点,除非此参数指定的,然后使用。


返回值
返回一个URL编码字符串。

修改

版本说明
5.1.2 arg_separator参数补充。
5.1.3方括号内是转义。


实例
例如# 1简单使用http_build_query ( )

$data = array('foo'=>'bar',
              'baz'=>'boom',
              'cow'=>'milk',
              'php'=>'hypertext processor');

echo http_build_query($data); // foo=bar&baz=boom&cow=milk&php=hypertext+processor
echo http_build_query($data, '', '&'); // foo=bar&baz=boom&cow=milk&php=hypertext+processor

?>
Example #2 http_build_query() with numerically index elements.

$data = array('foo', 'bar', 'baz', 'boom', 'cow' => 'milk', 'php' =>'hypertext processor');

echo http_build_query($data) . "n";
echo http_build_query($data, 'myvar_');
?>
The above example will output:

0=foo&1=bar&2=baz&3=boom&cow=milk&php=hypertext+processor
myvar_0=foo&myvar_1=bar&myvar_2=baz&myvar_3=boom&cow=milk&php=hypertext+processor
Example #3 http_build_query() with complex arrays

$data = array('user'=>array('name'=>'Bob Smith',
                            'age'=>47,
                            'sex'=>'M',
                            'dob'=>'5/12/1956'),
              'pastimes'=>array('golf', 'opera', 'poker', 'rap'),
              'children'=>array('bobby'=>array('age'=>12,
                                               'sex'=>'M'),
                                'sally'=>array('age'=>8,
                                               'sex'=>'F')),
              'CEO');

echo http_build_query($data, 'flags_');


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