blocks|key|834989|text|简单的柠檬汁：http://www.php.net/manual/en/function.json-encode.php|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|834990|<?php
$arr+=+array('a'+=>+1,+'b'+=>+2,+'c'+=>+3,+'d'+=>+4,+'e'+=>+5);

echo+json_encode($arr);
?>|code-block|syntax|javascript|834991|在前面提到的页面上有一篇由andyrusterholz+at+g-m-a-i-l+dot+c-o-m发布的文章，它也可以处理复杂的嵌套数组(如果你喜欢的话)。|style|CODE|834992|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/function.json-encode.php^0|7|1H|0|0|0|D|11|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@$A|10|B|11|K|L]]|9|@]|C|$]]|$1|M|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

Easy peasy lemon squeezy: <a href="http://www.php.net/manual/en/function.json-encode.php">http://www.php.net/manual/en/function.json-encode.php</a>

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

echo json_encode($arr);
?&gt;
</code></pre>

There's a post by <code>andyrusterholz at g-m-a-i-l dot c-o-m</code> on the aforementioned page that can also handle complex nested arrays (if that's your thing).

blocks|key|835029|text|简单:只需创建一个(嵌套的)+PHP数组并对其调用json_encode即可。数值数组转换为JSON列表([])，关联数组和对象转换为对象({})。示例：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|835030|$a+=+array(
++++++++array('foo'+=>+'bar'),
++++++++array('foo'+=>+'baz'));
$json+=+json_encode($a);|code-block|syntax|javascript|835031|为您提供：|835032|[{"foo":"bar"},{"foo":"baz"}]|835033|entityMap^0|P|B|1H|2|1Y|2|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Simple: Just create a (nested) PHP array and call <code>json_encode</code> on it. Numeric arrays translate into JSON lists (<code>[]</code>), associative arrays and PHP objects translate into objects (<code>{}</code>). Example:

<pre><code>$a = array(
 array('foo' =&gt; 'bar'),
 array('foo' =&gt; 'baz'));
$json = json_encode($a);
</code></pre>

Gives you:

<pre><code>[{"foo":"bar"},{"foo":"baz"}]
</code></pre>

blocks|key|619512|text|每次在php中创建json时，最好的方法是首先转换关联数组中的值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|619513|在此之后，只需使用json_encode($associativeArray)编码即可。我认为这是在php中创建json的最好方法，因为每当我们在php中从sql+query中获取结果时，大多数时候我们使用fetch_assoc函数来获取值，该函数也会返回一个关联数组。|offset|length|style|CODE|619514|$associativeArray+=+array();
$associativeArray+['FirstValue']+=+'FirstValue';|code-block|syntax|javascript|619515|..。等。|619516|在那之后。|619517|json_encode($associativeArray);|619518|entityMap^0|0|9|U|2V|B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@$D|W|E|X|F|G]|$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|J|7|13|8|@]|9|@]|A|$K|L]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

Best way that you should go every time for creating json in php is to first convert values in ASSOCIATIVE array.

After that just simply encode using <code>json_encode($associativeArray)</code>. I think it is the best way to create json in php because whenever we are fetching result form sql query in php most of the time we got values using <code>fetch_assoc</code> function, which also return one associative array.

<pre><code>$associativeArray = array();
$associativeArray ['FirstValue'] = 'FirstValue';
</code></pre>

...
etc.

After that.

<pre><code>json_encode($associativeArray);
</code></pre>

blocks|key|619552|text|对于数组，你也可以使用简短的注解：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|619553|$arr+=+[
++++[
++++++++"region"+=>+"valore",
++++++++"price"+=>+"valore2"
++++],
++++[
++++++++"region"+=>+"valore",
++++++++"price"+=>+"valore2"
++++],
++++[
++++++++"region"+=>+"valore",
++++++++"price"+=>+"valore2"
++++]
];

echo+json_encode($arr);|code-block|syntax|javascript|619554|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

also for array you can use short annotattion:

<pre><code>$arr = [
 [
 "region" =&gt; "valore",
 "price" =&gt; "valore2"
 ],
 [
 "region" =&gt; "valore",
 "price" =&gt; "valore2"
 ],
 [
 "region" =&gt; "valore",
 "price" =&gt; "valore2"
 ]
];

echo json_encode($arr);
</code></pre>

blocks|key|835274|text|这就是我如何在下面@tdammers给出的解决方案的帮助下做到这一点的。下面这行代码将被放入foreach循环中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|835275|$array[]+=+array('power'+=>+trim("Some+value"),+'time'+=>+"time+here"+);|code-block|syntax|javascript|835276|然后用json编码函数对数组进行编码。|835277|json_encode(array('newvalue'=>+$array),+200)|835278|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

That's how I am able to do with the help of solution given by @tdammers below. 
The following line will be placed inside foreach loop.

<pre><code>$array[] = array('power' =&gt; trim("Some value"), 'time' =&gt; "time here" );
</code></pre>

And then encode the array with json encode function

<pre><code>json_encode(array('newvalue'=&gt; $array), 200)
</code></pre>

blocks|key|835188|text|只需输入这一行，就会得到一个json数组，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|835189|echo+json_encode($array);|offset|length|style|CODE|835190|通常情况下，你使用json_encode从ios或android应用程序读取数据。因此，请确保除了准确的json数组之外，不会回显任何其他内容。|835191|entityMap^0|0|0|P|0|9|B|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

Just typing this single line would give you a json array , 

<code>echo json_encode($array);</code> 

Normally you use <code>json_encode</code> to read data from an ios or android app. so make sure you do not echo anything else other than the accurate json array.

blocks|key|619801|text|我创建了一个简单粗糙的jsonOBJ类用于我的代码。PHP不包括像JavaScript/Node+do这样的json函数。您必须以不同的方式迭代，但可能会有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|619802|<?php

//+define+a+JSON+Object+class
class+jsonOBJ+{
++++private+$_arr;
++++private+$_arrName;

++++function+__construct($arrName){
++++++++$this->_arrName+=+$arrName;
++++++++$this->_arr[$this->_arrName]+=+array();

++++}

++++function+toArray(){return+$this->_arr;}
++++function+toString(){return+json_encode($this->_arr);}

++++function+push($newObjectElement){
++++++++$this->_arr[$this->_arrName][]+=+$newObjectElement;+//+array[$key]=$val;
++++}

++++function+add($key,$val){
++++++++$this->_arr[$this->_arrName][]+=+array($key=>$val);
++++}
}

//+create+an+instance+of+the+object
$jsonObj+=+new+jsonOBJ("locations");

//+add+items+using+one+of+two+methods
$jsonObj->push(json_decode("{\"location\":\"TestLoc1\"}",true));+//+from+a+JSON+String
$jsonObj->push(json_decode("{\"location\":\"TestLoc2\"}",true));

$jsonObj->add("location","TestLoc3");+//+from+key:val+pairs

echo+"<pre>"+.+print_r($jsonObj->toArray(),1)+.+"</pre>";
echo+"<br+/>"+.+$jsonObj->toString();
?>|code-block|syntax|javascript|619803|将输出：|619804|Array
(
++++[locations]+=>+Array
++++++++(
++++++++++++[0]+=>+Array
++++++++++++++++(
++++++++++++++++++++[location]+=>+TestLoc1
++++++++++++++++)

++++++++++++[1]+=>+Array
++++++++++++++++(
++++++++++++++++++++[location]+=>+TestLoc2
++++++++++++++++)

++++++++++++[2]+=>+Array
++++++++++++++++(
++++++++++++++++++++[location]+=>+TestLoc3
++++++++++++++++)

++++++++)

)


{"locations":[{"location":"TestLoc1"},{"location":"TestLoc2"},{"location":"TestLoc3"}]}|619805|要迭代，请转换为普通对象：|619806|$myObj+=+$jsonObj->toArray();|619807|然后：|619808|foreach($myObj["locations"]+as+$locationObj){
++++echo+$locationObj["location"]+."<br+/>";
}|619809|输出：|619810|TestLoc1|619811|TestLoc2|619812|TestLoc3|619813|直接访问：|619814|$location+=+$myObj["locations"][0]["location"];
$location+=+$myObj["locations"][1]["location"];|619815|一个实际的例子：|619816|//+return+a+JSON+Object+(jsonOBJ)+from+the+rows
++++function+ParseRowsAsJSONObject($arrName,+$rowRS){
++++++++$jsonArr+=+new+jsonOBJ($arrName);+//+name+of+the+json+array

++++++++$rows+=+mysqli_num_rows($rowRS);
++++++++if($rows+>+0){
++++++++++++while($rows+>+0){
++++++++++++++++$rd+=+mysqli_fetch_assoc($rowRS);
++++++++++++++++$jsonArr->push($rd);
++++++++++++++++$rows--;
++++++++++++}
++++++++++++mysqli_free_result($rowRS);
++++++++}
++++++++return+$jsonArr->toArray();
++++}|619817|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1C|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1D|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1E|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|1F|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|1G|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|1H|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1I|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1J|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1K|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1L|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|1M|8|@]|9|@]|A|$]]|$1|12|3|13|5|D|7|1N|8|@]|9|@]|A|$E|F]]|$1|14|3|15|5|6|7|1O|8|@]|9|@]|A|$]]|$1|16|3|17|5|D|7|1P|8|@]|9|@]|A|$E|F]]|$1|18|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|19|$]]

I created a crude and simple jsonOBJ class to use for my code. PHP does not include json functions like JavaScript/Node do. You have to iterate differently, but may be helpful.

<pre><code>&lt;?php

// define a JSON Object class
class jsonOBJ {
 private $_arr;
 private $_arrName;

 function __construct($arrName){
 $this-&gt;_arrName = $arrName;
 $this-&gt;_arr[$this-&gt;_arrName] = array();

 }

 function toArray(){return $this-&gt;_arr;}
 function toString(){return json_encode($this-&gt;_arr);}

 function push($newObjectElement){
 $this-&gt;_arr[$this-&gt;_arrName][] = $newObjectElement; // array[$key]=$val;
 }

 function add($key,$val){
 $this-&gt;_arr[$this-&gt;_arrName][] = array($key=&gt;$val);
 }
}

// create an instance of the object
$jsonObj = new jsonOBJ("locations");

// add items using one of two methods
$jsonObj-&gt;push(json_decode("{\"location\":\"TestLoc1\"}",true)); // from a JSON String
$jsonObj-&gt;push(json_decode("{\"location\":\"TestLoc2\"}",true));

$jsonObj-&gt;add("location","TestLoc3"); // from key:val pairs

echo "&lt;pre&gt;" . print_r($jsonObj-&gt;toArray(),1) . "&lt;/pre&gt;";
echo "&lt;br /&gt;" . $jsonObj-&gt;toString();
?&gt;
</code></pre>

Will output:

<pre><code>Array
(
 [locations] =&gt; Array
 (
 [0] =&gt; Array
 (
 [location] =&gt; TestLoc1
 )

 [1] =&gt; Array
 (
 [location] =&gt; TestLoc2
 )

 [2] =&gt; Array
 (
 [location] =&gt; TestLoc3
 )

 )

)


{"locations":[{"location":"TestLoc1"},{"location":"TestLoc2"},{"location":"TestLoc3"}]}
</code></pre>

To iterate, convert to a normal object:

<pre><code>$myObj = $jsonObj-&gt;toArray();
</code></pre>

Then:

<pre><code>foreach($myObj["locations"] as $locationObj){
 echo $locationObj["location"] ."&lt;br /&gt;";
}
</code></pre>

Outputs:

TestLoc1 TestLoc2 TestLoc3 

Access direct:

<pre><code>$location = $myObj["locations"][0]["location"];
$location = $myObj["locations"][1]["location"];
</code></pre>

A practical example:

<pre><code>// return a JSON Object (jsonOBJ) from the rows
 function ParseRowsAsJSONObject($arrName, $rowRS){
 $jsonArr = new jsonOBJ($arrName); // name of the json array

 $rows = mysqli_num_rows($rowRS);
 if($rows &gt; 0){
 while($rows &gt; 0){
 $rd = mysqli_fetch_assoc($rowRS);
 $jsonArr-&gt;push($rd);
 $rows--;
 }
 mysqli_free_result($rowRS);
 }
 return $jsonArr-&gt;toArray();
 }
</code></pre>

From PHP code I want to create an json array:

<pre><code>[
 {"region":"valore","price":"valore2"},
 {"region":"valore","price":"valore2"},
 {"region":"valore","price":"valore2"}
]
</code></pre>

How can I do this?

How to create an array for JSON using PHP?

JSON

在PHP代码中，我想创建一个json数组：[  {"region":"valore","price":"valore2"},  {"region":"valore","price":"valore2"},  {"region":"valore","price":"valore2"}]我该怎么做呢？

问如何使用PHP为JSON创建数组？
EN

回答 7

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问如何使用PHP为JSON创建数组？EN

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问如何使用PHP为JSON创建数组？
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