www.402.comPHP中json_decode(卡塔尔和json_encode(卡塔尔(قطر‎的选择形式

以上例程会输出:

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] => ) )

如上例程会输出:

代码如下:

能够看出
json_decode($data,trueState of Qatar输出的叁个涉及数组,因此可以知道json_decode($data)输出的是指标,而json_decode(“$arr”,true卡塔尔国是把它免强生成PHP关联数组.

可以看出经过json_decode(卡塔尔编写翻译出来的是目的,以后出口json_decode($data,true)试下

json_encode — 对变量举办 JSON 编码

代码如下:

Report a bug 范例

代码如下:

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

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”;
?>

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

代码如下:

范例

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”;

<?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"; 
?>

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”;

以上例程会输出:

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

参数

上例将出口:

json_decode对JSON格式的字符串进行编码而json_encode对变量举行 JSON
编码,须求的朋友能够参照下。

以上例程会输出:

说明
mixed json_decode ( string $json [, bool $assoc ] )
经受三个 JSON 格式的字符串并且把它转变为 PHP 变量

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

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

该函数只能选取 UTF-8 编码的数据

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 参数

Example #1 json_decode() 的例子

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 参数扩充常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

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] => ) )

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”]

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

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

2.json_encode()

代码如下:

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

<?php
echo “一连数组”.PHP_EOL;
$sequential = array(“foo”, “bar”, “baz”, “blong”);
var_dump(
$sequential,
json_encode($sequential)
);

Example #1 A json_encode() 的例子

结果为:

连续数组 
array(4) { 
[0]=> 
string(3) "foo" 
[1]=> 
string(3) "bar" 
[2]=> 
string(3) "baz" 
[3]=> 
string(5) "blong" 
} 
string(27) "["foo","bar","baz","blong"]" 

非连续数组 
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"}" 

删除一个连续数组值的方式产生的非连续数组 
array(3) { 
[0]=> 
string(3) "foo" 
[2]=> 
string(3) "baz" 
[3]=> 
string(5) "blong" 
} 
string(33) "{"0":"foo","2":"baz","3":"blong"}"

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

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] => ) )

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

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

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 参数扩张常量:JSON_NUMERIC_CHECK。
5.3.0 增加 options 参数.

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

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:

echo json_decode($data,true);

如上例程会输出:

能够看看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只选用utf-8编码的字符,所以json_encode(卡塔尔国的参数必须是utf-8编码,不然会赢得空字符或然null。

json
待解码的 json string 格式的字符串。

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] => ) )

代码如下:

json_decode — 对 JSON 格式的字符串实行编码

如上例程会输出:

结果:

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

<?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) 
); 
?>

echo PHP_EOL.”删除一个连连数组值的秘技发出的非延续数组”.PHP_EOL;
unset($sequential[1]);
var_dump(
$sequential,
json_encode($sequential)
);
?>

能够见见经过json_decode(卡塔尔(قطر‎编译出来的是目的,未来出口json_decode($data,true)试下

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

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

echo json_encode($arr);
?>

该函数只可以担任 UTF-8 编码的多寡

代码如下:

Report a bug 返回值
编码成功则赶回三个以 JSON 情势表示的 string 也许在曲折时回来 FALSE 。

结果为:

结果为:

echo PHP_EOL.”非一而再数组”.PHP_EOL;
$nonsequential = array(1=>”foo”, 2=>”bar”, 3=>”baz”,
4=>”blong”);
var_dump(
$nonsequential,
json_encode($nonsequential)
);

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

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

Example #3 延续与非延续数组示例

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

Example #1 json_decode() 的例子

上例将出口:

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

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