blocks|key|3268873|text|如果您有print_r函数，请检查docs。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3268874|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.print-r.php^0|4|7|H|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You have the <code>print_r</code> function, check <a href="http://php.net/manual/en/function.print-r.php" rel="nofollow noreferrer">docs</a>.

blocks|key|316109|text|有一个object+serialization模块，使用serialize函数可以序列化任何对象。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|316110|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/language.oop5.serialization.php|1|http://php.net/serialize^0|3|K|0|S|9|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

There is an <a href="http://php.net/manual/en/language.oop5.serialization.php" rel="noreferrer">object serialization</a> module, with the <a href="http://php.net/serialize" rel="noreferrer">serialize</a> function you can serialize any object.

blocks|key|3055291|text|使用强制转换运算符(string)$yourObject;|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3055292|entityMap^0|9|K|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Use the casting operator <code>(string)$yourObject;</code>

blocks|key|3055307|text|您可以通过在类中实现__toString()方法来定制将对象表示为字符串的方式，以便当对象为type+cast+as+a+string+(显式类型转换$str+=+(string)+$myObject;或自动echo+$myObject)时，您可以控制包含的内容和字符串格式。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3055308|如果你只想显示对象的数据，上面的方法是可行的。如果您希望将对象存储在会话或数据库中，则需要对其执行serialize操作，以便PHP知道如何重构实例。|3055309|下面是一些代码来演示其中的区别：|3055310|class+MyObject+{

++protected+$name+=+'JJ';

++public+function+__toString()+{
++++return+"My+name+is:+{$this->name}\n";
++}

}

$obj+=+new+MyObject;

echo+$obj;
echo+serialize($obj);|code-block|syntax|javascript|3055311|输出：|3055312|3055313|我的名字是:+JJ|blockquote|3055314|3055315|O:8:"MyObject":1:{s:7:"*name";s:2:"JJ";}|3055316|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/en/language.oop5.magic.php#language.oop5.magic.tostring|1|http://www.php.net/manual/en/language.oop5.serialization.php^0|A|C|23|Q|2W|E|1A|L|0|0|1D|9|1|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|17|8|@$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@$9|1E|A|1F|1|1G]]|E|$]]|$1|F|3|G|5|6|7|1H|8|@]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|H|3|I|5|6|7|1L|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|1M|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|1N|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]|$1|R|3|S|5|T|7|1P|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|V|3|W|5|6|7|1R|8|@]|D|@]|E|$]]|$1|X|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]]|Y|$Z|$5|10|11|12|E|$13|14]]|15|$5|10|11|12|E|$13|16]]]]

You can tailor how your object is represented as a string by implementing a <code>__toString()</code> method in your class, so that when your object is <a href="http://www.php.net/manual/en/language.oop5.magic.php#language.oop5.magic.tostring" rel="noreferrer">type cast as a string</a> (explicit type cast <code>$str = (string) $myObject;</code>, or automatic <code>echo $myObject</code>) you can control what is included and the string format.
If you only want to display your object's data, the method above would work. If you want to store your object in a session or database, you need to <a href="http://www.php.net/manual/en/language.oop5.serialization.php" rel="noreferrer">serialize</a> it, so PHP knows how to reconstruct your instance.
Some code to demonstrate the difference:
<pre><code>class MyObject {

 protected $name = 'JJ';

 public function __toString() {
 return &quot;My name is: {$this-&gt;name}\n&quot;;
 }

}

$obj = new MyObject;

echo $obj;
echo serialize($obj);
</code></pre>
Output:
<blockquote>
My name is: JJ
O:8:&quot;MyObject&quot;:1:{s:7:&quot;*name&quot;;s:2:&quot;JJ&quot;;}
</blockquote>

blocks|key|3055318|text|在您的例子中，您应该简单地使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3055319|$firstapiOutput->document_number|code-block|syntax|javascript|3055320|作为第二个api的输入。|3055321|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In your case, you should simply use

<pre><code>$firstapiOutput-&gt;document_number
</code></pre>

as the input for the second api.

<blockquote>
 Possible Duplicate: 
 <a href="https://stackoverflow.com/questions/28098/php-tostring-equivalent">PHP ToString() equivalent</a> 
</blockquote>



how to convert object into string in php

Actually i am dealing with web service APIs.i want to use output of one API as a input for another API. when i am trying to do this i got error like this:Catchable fatal error: Object of class std could not be converted to string in C:\ ...

this is the output of first API::stdClass Object ( [document_number] => 10ba60 ) now i want only that number to use as input for 2nd AP

print_r and _string() both are not working in my case

how to convert object into string in php

对象存储

数据库

 可能重复：如何在php中将对象转换为字符串实际上，我正在处理web服务API。我想使用一个API的输出作为另一个API的输入。当我尝试这样做时，我得到这样的错误:可捕获的致命错误:无法在C:\ ...中将std类的对象转换为字符串这是第一个API::stdClass对象( document_number => 10b...

问如何在php中将对象转换为字符串
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