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http_build_query

(PHP 5, PHP 7, PHP 8)

http_build_query — Generate URL-encoded query string

Опис

http_build_query(
    array|object $data,
    string $numeric_prefix = "",
    ?string $arg_separator = null,
    int $encoding_type = PHP_QUERY_RFC1738
): string

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

Параметри

data

May be an array or object containing properties.

If data is an array, it may be a simple one-dimensional structure, or an array of arrays (which in turn may contain other arrays).

If data is an object, then only public properties will be incorporated into the result.

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

The argument separator. If not set or null, arg_separator.output is used to separate arguments.

encoding_type

By default, PHP_QUERY_RFC1738.

If encoding_type is PHP_QUERY_RFC1738, then encoding is performed per » RFC 1738 and the application/x-www-form-urlencoded media type, which implies that spaces are encoded as plus (+) signs.

If encoding_type is PHP_QUERY_RFC3986, then encoding is performed according to » RFC 3986, and spaces will be percent encoded (%20).

Значення, що повертаються

Returns a URL-encoded string.

Журнал змін

Версія Опис
8.0.0 arg_separator is now nullable.

Приклади

Приклад #1 Simple usage of http_build_query()

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

echo http_build_query($data) . "\n";
echo http_build_query($data, '', '&amp;');

?>

Поданий вище приклад виведе:

foo=bar&baz=boom&cow=milk&php=hypertext+processor
foo=bar&amp;baz=boom&amp;cow=milk&amp;php=hypertext+processor

Приклад #2 http_build_query() with numerically index elements.

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

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

Поданий вище приклад виведе:

0=foo&1=bar&2=baz&4=boom&cow=milk&php=hypertext+processor
myvar_0=foo&myvar_1=bar&myvar_2=baz&myvar_4=boom&cow=milk&php=hypertext+processor

Приклад #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_');
?>

The above example 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

Зауваження:

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.

Приклад #4 Using http_build_query() with an object

<?php
class parentClass {
public $pub = 'publicParent';
protected $prot = 'protectedParent';
private $priv = 'privateParent';
public $pub_bar = null;
protected $prot_bar = null;
private $priv_bar = null;

public function __construct(){
$this->pub_bar = new childClass();
$this->prot_bar = new childClass();
$this->priv_bar = new childClass();
}
}

class childClass {
public $pub = 'publicChild';
protected $prot = 'protectedChild';
private $priv = 'privateChild';
}

$parent = new parentClass();

echo http_build_query($parent);
?>

Поданий вище приклад виведе:

pub=publicParent&pub_bar%5Bpub%5D=publicChild

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