blocks|key|4664041|text|$_SESSION['result']+=+'2011-08-14+20:34:12';

$dateTime+=+"{$_SESSION['result']}+%2B1+hour";

echo($dateTime);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|4664042|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$_SESSION['result'] = '2011-08-14 20:34:12';

$dateTime = "{$_SESSION['result']} +1 hour";

echo($dateTime);
</code></pre>

blocks|key|3196484|text|使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3196485|$dateTime+=+"{$_SESSION['result']}+%2B1+hour";|code-block|syntax|javascript|3196486|或者这样：|3196487|$dateTime+=+$_SESSION['result']+.+"+%2B1+hour";|3196488|然后|3196489|echo($dateTime);|3196490|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Use this:

<pre><code>$dateTime = "{$_SESSION['result']} +1 hour";
</code></pre>

or this:

<pre><code>$dateTime = $_SESSION['result'] . " +1 hour";
</code></pre>

and then

<pre><code>echo($dateTime);
</code></pre>

blocks|key|4664052|text|您可以将字符串连接起来|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4664053|echo+$dateTime+=+$_SESSION['result']."+%2B1+hour";|code-block|syntax|javascript|4664054|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|$]]

You can concatenate the string

<pre><code>echo $dateTime = $_SESSION['result']." +1 hour";
</code></pre>

blocks|key|1036152|text|我建议你读一读关于strings+in+the+PHP+docs的文章。这里你想要的东西叫做拼接。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1036153|$_SESSION['result']+=+'2011-08-14+20:34:12';

$dateTime+=+$_SESSION['result']+.+'+%2B1+hour';

echo+$dateTime;|code-block|syntax|javascript|1036154|还要注意在设置其内容之后想要回显$dateTime的最后一行。|style|CODE|1036155|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/language.operators.string.php^0|9|N|0|0|0|G|9|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]]]]

I suggest you read about <a href="http://php.net/manual/en/language.operators.string.php" rel="nofollow">strings in the PHP docs</a>. What you want here is called concatenation.

<pre><code>$_SESSION['result'] = '2011-08-14 20:34:12';

$dateTime = $_SESSION['result'] . ' +1 hour';

echo $dateTime;
</code></pre>

Also notice the last line you want to echo <code>$dateTime</code> after you have set its contents.

blocks|key|1036171|text|您可以在PHP:+Array+-+Array+do's+and+don'ts下找到许多有关如何访问数组元素的示例。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1036172|$arr+=+array('foo'=>1234,+'bar'=>array('baz'=>'abcdef'));

//+simply+no+quotes+within+double-quoted+string+literals
echo+"foo:+$arr[foo]\n";
//+echo+"foo:+$arr[bar][baz]\n";+<-+doesn't+work+as+intended

//+curly-braces+->+same+syntax+as+outside+of+a+string+literal
echo+"foo:+{$arr['foo']}\n";
echo+"foo:+{$arr['bar']['baz']}\n";

//+string+concatenation
echo+"foo:+".+$arr['foo']+."\n";
echo+"foo:+".+$arr['bar']['baz']+."\n";

//+printf+with+placeholder+in+format+string
printf("foo:+%25s\n",+$arr['foo']);
printf("foo:+%25s\n",+$arr['bar']['baz']);

//+same+as+printf+but+it+returns+the+string+instead+of+printing+it
$x+=+sprintf("foo:+%25s\n",+$arr['foo']);
echo+$x;
$x+=+sprintf("foo:+%25s\n",+$arr['bar']['baz']);
echo+$x;|code-block|syntax|javascript|1036173|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.php.net/manual/en/language.types.array.php#language.types.array.donts^0|4|Y|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You can find many examples of how to access array elements under <a href="http://docs.php.net/manual/en/language.types.array.php#language.types.array.donts" rel="nofollow">PHP: Array - Array do's and don'ts</a>. 

<pre><code>$arr = array('foo'=&gt;1234, 'bar'=&gt;array('baz'=&gt;'abcdef'));

// simply no quotes within double-quoted string literals
echo "foo: $arr[foo]\n";
// echo "foo: $arr[bar][baz]\n"; &lt;- doesn't work as intended

// curly-braces -&gt; same syntax as outside of a string literal
echo "foo: {$arr['foo']}\n";
echo "foo: {$arr['bar']['baz']}\n";

// string concatenation
echo "foo: ". $arr['foo'] ."\n";
echo "foo: ". $arr['bar']['baz'] ."\n";

// printf with placeholder in format string
printf("foo: %s\n", $arr['foo']);
printf("foo: %s\n", $arr['bar']['baz']);

// same as printf but it returns the string instead of printing it
$x = sprintf("foo: %s\n", $arr['foo']);
echo $x;
$x = sprintf("foo: %s\n", $arr['bar']['baz']);
echo $x;
</code></pre>

blocks|key|3196509|text|在本例中，字符串使用单引号，变量不使用单引号。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3196510|echo+$dateTime+=+$_SESSION['result'].'+%2B1+hour';|code-block|syntax|javascript|3196511|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|$]]

Use the single quote for string and nothing for variable, in your case.

<pre><code>echo $dateTime = $_SESSION['result'].' +1 hour';
</code></pre>

blocks|key|881101|text|会话$_+|type|unstyled|depth|inlineStyleRanges|entityRanges|data|881102|‘’result‘=+'2011-08-14+20:34:12'；|blockquote|881103|881104|echo+$dateTime+=$_SESSION‘’result‘。“%2B1小时”；|881105|881106|尝试上面的方法。|881107|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|P|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|L|$]]

<blockquote>
$_SESSION['result'] = '2011-08-14 20:34:12';
echo $dateTime = $_SESSION['result'] . &quot; +1 hour&quot;;
</blockquote>
Try the above.

<pre><code>$_SESSION['result'] = '2011-08-14 20:34:12';

echo $dateTime = "$_SESSION['result'] +1 hour";
</code></pre>

Expect output: '2011-08-14 20:34:12 +1 hour'

I know there is error on the double quotation, but don't know how to fix it. Can anyone help me out? It would be really appreciate anyone can give some explanation, Thanks!

$_SESSION[] inside of Double quotation

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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$_SESSION['result'] = '2011-08-14 20:34:12';echo $dateTime = "$_SESSION['result'] +1 hour";预期输出：'2011-08-14 20:34:12 +1小时‘我知道双引号有错误，但不知道如何修复它。有人能帮我吗？如果任何人能给我一些解释，我将不胜感激，谢谢！

问双引号内的$_SESSION[]
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