decode — 对 JSON 格式的字符串进行编码

结果为:

$obj->Name= ‘a1′;$obj->Number =’123’;
$obj->Contno= ‘000’;
echo json_encode($obj);

json_decode — 对 JSON 格式的字符串进行编码

value
待编码的 value ,除了resource 类型之外,可感觉任何数据类型

能够看看经过json_decode(卡塔尔编写翻译出来的是目的,现在出口json_decode($data,true)试下

如上例程会输出:

范例

代码如下:

assoc
当该参数为 TRUE 时,将重回 array 而非 object 。

代码如下:

1.json_decode()

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

<?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"; 
?>

连接数组
array(4) {
[0]=>
string(3) “foo”
[1]=>
string(3) “bar”
[2]=>
string(3) “baz”
[3]=>
string(5) “blong”
}
string(27) “[“foo”,”bar”,”baz”,”blong”]”

Example #1 A json_encode() 的例子

非三回九转数组
array(4) {
[1]=>
string(3) “foo”
[2]=>
string(3) “bar”
[3]=>
string(3) “baz”
[4]=>
string(5) “blong”
}
string(43) “{“1″:”foo”,”2″:”bar”,”3″:”baz”,”4″:”blong”}”

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.

结果为:

Report a bug 返回值
编码成功则赶回一个以 JSON 格局表示的 string 或许在失败时重返 FALSE 。

{“Name”:”a1″,
“Number”:”123″,
“Contno”:”000″
}

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

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

上述例程会输出:

上例将出口:

json_decode对JSON格式的字符串实行编码而json_encode对变量实行 JSON
编码,须要的对象能够参见下。

Report a bug 范例

结果为:

代码如下:

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

代码如下:

json
待解码的 json string 格式的字符串。

json_decode — 对 JSON 格式的字符串实行编码

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] => ) )

能够看来json_encode()和json_decode(State of Qatar是编写翻译和反编写翻译进度,注意json只接收utf-8编码的字符,所以json_encode(卡塔尔的参数必需是utf-8编码,不然会获得空字符或然null。

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);

{“a”:1,”b”:2,”c”:3,”d”:4,”e”:5}

说明
mixed json_decode ( string $json [, bool $assoc ] )
收受四个 JSON 格式的字符串而且把它调换为 PHP 变量

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] => ) )

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"}

**2.json_encode()

Example #3 三番五次与非连续数组示例

能够看来经过json_decode(State of Qatar编写翻译出来的是目的,今后出口json_decode($data,true)试下

2.json_encode()

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

能够看出
json_decode($data,true卡塔尔(قطر‎输出的一个提到数组,由此可以预知json_decode($data)输出的是目的,而json_decode(“$arr”,true卡塔尔国是把它免强生成PHP关联数组.

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

{"Name":"a1", 
"Number":"123", 
"Contno":"000" 
}

Example #3 一连与非接二连三数组示例

Report a bug 范例

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 参数增添常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

如上例程会输出:

echo PHP_EOL.”删除三个一而再三番四遍数组值的点子发出的非接二连三数组”.PHP_EOL;
unset($sequential[1]);
var_dump(
$sequential,
json_encode($sequential)
);
?>

echo json_decode($data,true);

说明
mixed json_decode ( string $json [, bool $assoc ] )
收受叁个 JSON 格式的字符串况且把它转变为 PHP 变量

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

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)); 
?>

echo PHP_EOL.”非一连数组”.PHP_EOL;
$nonsequential = array(1=>”foo”, 2=>”bar”, 3=>”baz”,
4=>”blong”);
var_dump(
$nonsequential,
json_encode($nonsequential)
);

json_encode — 对变量实行 JSON 编码

Example #2 json_encode(State of Qatar 函数中 options 参数的用法

Report a bug 更新日志
版本 说明
5.4.0 options 参数增添常量: JSON_PRETTY_PRINT,
JSON_UNESCAPED_SLASHES, 和 JSON_UNESCAPED_UNICODE。
5.3.3 options 参数增加常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

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

参数

代码如下:

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

echo json_encode($arr); 
?>

**1.json_decode()

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

结果为:

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

$b = array();

上述例程会输出:

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

结果:

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.

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] => ) )

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

能够看见json_encode()和json_decode(卡塔尔(قطر‎是编写翻译和反编写翻译进程,注意json只接收utf-8编码的字符,所以json_encode(卡塔尔(قطر‎的参数必需是utf-8编码,不然会收获空字符或许null。

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

<?php 
echo "连续数组".PHP_EOL; 
$sequential = array("foo", "bar", "baz", "blong"); 
var_dump( 
$sequential, 
json_encode($sequential) 
); 

echo PHP_EOL."非连续数组".PHP_EOL; 
$nonsequential = array(1=>"foo", 2=>"bar", 3=>"baz", 4=>"blong"); 
var_dump( 
$nonsequential, 
json_encode($nonsequential) 
); 

echo PHP_EOL."删除一个连续数组值的方式产生的非连续数组".PHP_EOL; 
unset($sequential[1]); 
var_dump( 
$sequential, 
json_encode($sequential) 
); 
?>

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

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