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http_build_query

(PHP 5)

http_build_queryGenerate URL-encoded query string

Описание

string http_build_query ( array $formdata [, string $numeric_prefix [, string $arg_separator ]] )

Generates a URL-encoded query string from the associative (or indexed) array provided.

Список параметров

formdata

May be an array or object containing properties.

The array form may be a simple one-dimensional structure, or an array of arrays (who in turn may contain other arrays).

numeric_prefix

If numeric indices are used in the base array and this parameter is provided, it will be prepended to the numeric index for elements in the base array only.

This is meant to allow for legal variable names when the data is decoded by PHP or another CGI application later on.

arg_separator

arg_separator.output is used to separate arguments, unless this parameter is specified, and is then used.

Возвращаемые значения

Returns a URL-encoded string.

Список изменений

Версия Описание
5.1.2 The arg_separator parameter was added.
5.1.3 Square brackets are escaped.

Примеры

Пример #1 Simple usage of http_build_query()

<?php
$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'''&amp;'); // foo=bar&amp;baz=boom&amp;cow=milk&amp;php=hypertext+processor

?>

Пример #2 http_build_query() with numerically index elements.

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

echo 
http_build_query($data) . "\n";
echo 
http_build_query($data'myvar_');
?>

Результат выполнения данного примера:

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

Пример #3 http_build_query() with complex arrays

<?php
$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_');
?>

this will output : (word wrapped for readability)

user%5Bname%5D=Bob+Smith&user%5Bage%5D=47&user%5Bsex%5D=M&
user%5Bdob%5D=5%2F12%2F1956&pastimes%5B0%5D=golf&pastimes%5B1%5D=opera&
pastimes%5B2%5D=poker&pastimes%5B3%5D=rap&children%5Bbobby%5D%5Bage%5D=12&
children%5Bbobby%5D%5Bsex%5D=M&children%5Bsally%5D%5Bage%5D=8&
children%5Bsally%5D%5Bsex%5D=F&flags_0=CEO

Замечание: Only the numerically indexed element in the base array "CEO" received a prefix. The other numeric indices, found under pastimes, do not require a string prefix to be legal variable names.

Пример #4 Using http_build_query() with an object

<?php
class myClass {
    var 
$foo;
    var 
$baz;

    function 
myClass() {
        
$this->foo 'bar';
        
$this->baz 'boom';
    }
}

$data = new myClass();

echo 
http_build_query($data); // foo=bar&baz=boom

?>

Смотрите также

  • parse_str() - Разбирает строку в переменные
  • parse_url() - Parse a URL and return its components
  • urlencode() - URL-encodes string
  • array_walk() - Применить пользовательскую функцию к каждому члену массива






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