威尼斯城所有登入网址


操作系统威尼斯城所有登入网址:,PHP中的超全局变量

然后第二个参数中,然后第二个参数中

decode — 对 JSON 格式的字符串进行编码

json_decode对JSON格式的字符串进行编码而json_encode对变量进行 JSON
编码,要求的对象能够参见下。

**1.json_decode()

1.json_decode()

**json_decode
(PHP 5 >= 5.2.0, PECL json >= 1.2.0)

json_decode
(PHP 5 >= 5.2.0, PECL json >= 1.2.0)

json_decode — 对 JSON 格式的字符串实行编码

json_decode — 对 JSON 格式的字符串进行编码

说明
mixed json_decode ( string $json [, bool $assoc ] )
收受几个 JSON 格式的字符串而且把它转变为 PHP 变量

说明
mixed json_decode ( string $json [, bool $assoc ] )
收受三个 JSON 格式的字符串何况把它转换为 PHP 变量

参数

参数

json
待解码的 json string 格式的字符串。

json
待解码的 json string 格式的字符串。

assoc
当该参数为 TRUE 时,将回来 array 而非 object 。

assoc
当该参数为 TRUE 时,将再次来到 array 而非 object 。

返回值
Returns an object or if the optional assoc parameter is TRUE, an
associative array is instead returned.

返回值
Returns an object or if the optional assoc parameter is TRUE, an
associative array is instead returned.

范例

范例

Example #1 json_decode() 的例子

Example #1 json_decode() 的例子

代码如下:

<?php 
$json = '{"a":1,"b":2,"c":3,"d":4,"e":5}'; 
var_dump(json_decode($json)); 
var_dump(json_decode($json, true)); 
?>

<?php
$json = ‘{“a”:1,”b”:2,”c”:3,”d”:4,”e”:5}’;
var_dump(json_decode($json));
var_dump(json_decode($json, true));
?>

上例将出口:

上例将出口:

object(stdClass)#1 (5) { 
["a"] => int(1) 
["b"] => int(2) 
["c"] => int(3) 
["d"] => int(4) 
["e"] => int(5) 
} 

array(5) { 
["a"] => int(1) 
["b"] => int(2) 
["c"] => int(3) 
["d"] => int(4) 
["e"] => int(5) 
}

$data='[{"Name":"a1","Number":"123","Contno":"000","QQNo":""},{"Name":"a1","Number":"123","Contno":"000","QQNo":""},{"Name":"a1","Number":"123","Contno":"000","QQNo":""}]'; 
echo json_decode($data);

代码如下:

结果为:

object(stdClass)#1 (5) {
[“a”] => int(1)
[“b”] => int(2)
[“c”] => int(3)
[“d”] => int(4)
[“e”] => int(5)
}

Array ( [0] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => stdClass Object ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )

array(5) {
[“a”] => int(1)
[“b”] => int(2)
[“c”] => int(3)
[“d”] => int(4)
[“e”] => int(5)
}

能够见见经过json_decode(State of Qatar编译出来的是目的,以往出口json_decode($data,true)试下

 

echo json_decode($data,true);

代码如下:

结果:

$data='[{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””},{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””},{“Name”:”a1″,”Number”:”123″,”Contno”:”000″,”QQNo”:””}]’;
echo json_decode($data);

Array ( [0] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [1] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2] => Array ( [Name] => a1 [Number] => 123 [Contno] => 000 [QQNo] => ) )

结果为:

可以看看
json_decode($data,true卡塔尔(قطر‎输出的三个关联数组,因此可以知道json_decode($data)输出的是指标,而json_decode(“$arr”,true卡塔尔国是把它强逼生成PHP关联数组.

代码如下:

2.json_encode()

Array ( [0] => stdClass Object ( [Name] => a1 [Number] =>
123 [Contno] => 000 [QQNo] => ) [1] => stdClass Object (
[Name] => a1 [Number] => 123 [Contno] => 000 [QQNo]
=> ) [2] => stdClass Object ( [Name] => a1 [Number] =>
123 [Contno] => 000 [QQNo] => ) )

json_encode
(PHP 5 >= 5.2.0, PECL json >= 1.2.0)

能够看来经过json_decode(卡塔尔国编写翻译出来的是目的,今后出口json_decode($data,true)试下

json_encode — 对变量举办 JSON 编码

代码如下:

Report a bug 说明
string json_encode ( mixed $value [, int $options = 0 ] )
返回 value 值的 JSON 形式

echo json_decode($data,true);

Report a bug 参数

结果:

value
待编码的 value ,除了resource 类型之外,可感觉别的数据类型

代码如下:

该函数只可以选用 UTF-8 编码的多少

Array ( [0] => Array ( [Name] => a1 [Number] => 123
[Contno] => 000 [QQNo] => ) [1] => Array ( [Name] =>
a1 [Number] => 123 [Contno] => 000 [QQNo] => ) [2]
=> Array ( [Name] => a1 [Number] => 123 [Contno] =>
000 [QQNo] => ) )

options
由以下常量组成的二进制掩码: JSON_HEX_QUOT, JSON_HEX_TAG,
JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK,
JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT,
JSON_UNESCAPED_UNICODE.

能够看出
json_decode($data,true卡塔尔(قطر‎输出的一个提到数组,由此可见json_decode($data)输出的是目的,而json_decode(“$arr”,true卡塔尔是把它强逼生成PHP关联数组.

Report a bug 返回值
编码成功则赶回贰个以 JSON 情势表示的 string 只怕在战败时再次回到 FALSE 。

**2.json_encode()

Report a bug 更新日志
版本 说明
5.4.0 options 参数扩充常量: JSON_PRETTY_PRINT,
JSON_UNESCAPED_SLASHES, 和 JSON_UNESCAPED_UNICODE。
5.3.3 options 参数扩大常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

**json_encode
(PHP 5 >= 5.2.0, PECL json >= 1.2.0)

Report a bug 范例

json_encode — 对变量举行 JSON 编码

Example #1 A json_encode() 的例子

Report a bug 说明
string json_encode ( mixed $value [, int $options = 0 ] )
返回 value 值的 JSON 形式

<?php 
$arr = array ('a'=>1,'b'=>2,'c'=>3,'d'=>4,'e'=>5); 

echo json_encode($arr); 
?>

Report a bug 参数

以上例程会输出:

value
待编码的 value ,除了resource 类型之外,可感到此外数据类型

{"a":1,"b":2,"c":3,"d":4,"e":5}

该函数只可以选择 UTF-8 编码的多少

Example #2 json_encode(卡塔尔国 函数中 options 参数的用法

options
由以下常量组成的二进制掩码: JSON_HEX_QUOT, JSON_HEX_TAG,
JSON_HEX_AMP, JSON_HEX_APOS, JSON_NUMERIC_CHECK,
JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT,
JSON_UNESCAPED_UNICODE.

<?php 
$a = array('<foo>',"'bar'",'"baz"','&blong&', "\xc3\xa9"); 

echo "Normal: ", json_encode($a), "\n"; 
echo "Tags: ", json_encode($a, JSON_HEX_TAG), "\n"; 
echo "Apos: ", json_encode($a, JSON_HEX_APOS), "\n"; 
echo "Quot: ", json_encode($a, JSON_HEX_QUOT), "\n"; 
echo "Amp: ", json_encode($a, JSON_HEX_AMP), "\n"; 
echo "Unicode: ", json_encode($a, JSON_UNESCAPED_UNICODE), "\n"; 
echo "All: ", json_encode($a, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP | JSON_UNESCAPED_UNICODE), "\n\n"; 

$b = array(); 

echo "Empty array output as array: ", json_encode($b), "\n"; 
echo "Empty array output as object: ", json_encode($b, JSON_FORCE_OBJECT), "\n\n"; 

$c = array(array(1,2,3)); 

echo "Non-associative array output as array: ", json_encode($c), "\n"; 
echo "Non-associative array output as object: ", json_encode($c, JSON_FORCE_OBJECT), "\n\n"; 

$d = array('foo' => 'bar', 'baz' => 'long'); 

echo "Associative array always output as object: ", json_encode($d), "\n"; 
echo "Associative array always output as object: ", json_encode($d, JSON_FORCE_OBJECT), "\n\n"; 
?>

Report a bug 返回值
编码成功则赶回叁个以 JSON 方式表示的 string 只怕在战败时再次回到 FALSE 。

上述例程会输出:

Report a bug 更新日志
版本 说明
5.4.0 options 参数扩大常量: JSON_PRETTY_PRINT,
JSON_UNESCAPED_SLASHES, 和 JSON_UNESCAPED_UNICODE。
5.3.3 options 参数扩张常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

Normal: ["<foo>","'bar'","\"baz\"","&blong&","\u00e9"] 
Tags: ["\u003Cfoo\u003E","'bar'","\"baz\"","&blong&","\u00e9"] 
Apos: ["<foo>","\u0027bar\u0027","\"baz\"","&blong&","\u00e9"] 
Quot: ["<foo>","'bar'","\u0022baz\u0022","&blong&","\u00e9"] 
Amp: ["<foo>","'bar'","\"baz\"","\u0026blong\u0026","\u00e9"] 
Unicode: ["<foo>","'bar'","\"baz\"","&blong&","é"] 
All: ["\u003Cfoo\u003E","\u0027bar\u0027","\u0022baz\u0022","\u0026blong\u0026","é"] 

Empty array output as array: [] 
Empty array output as object: {} 

Non-associative array output as array: [[1,2,3]] 
Non-associative array output as object: {"0":{"0":1,"1":2,"2":3}} 

Associative array always output as object: {"foo":"bar","baz":"long"} 
Associative array always output as object: {"foo":"bar","baz":"long"}

Report a bug 范例

相关文章

No Comments, Be The First!
近期评论
    功能
    网站地图xml地图