在PHP中将包含数字范围的GET变量转换为字符串

问题描述：

I have a get variable in this format : 0-1499. Now I need to convert it to a string so that I can explode the variable. For this I tried to convert it to string , but I am not getting any output. Here is the sample code :

$mystring = $_GET['myvars']; //equals to 0-1499;
//$mystring = (string)$mystring;
$mystring = strval($mystring);
$mystring = explode("-",$mystring);
print_r($mystring);

The above print_r() shows an array Array ( [0] => [1] => 1499 ). That means it calculates the $mystring before converted into string. How can I send 0-1499 as whole string to explode ?

我有一个这种格式的get变量：0-1499 code>。现在我需要将其转换为字符串，以便我可以爆炸变量。为此，我试图将其转换为字符串，但我没有得到任何输出。以下是示例代码： p>

  $ mystring = $ _GET ['myvars'];  //等于0-1499; 
 // $ mystring =（string）$ mystring; 
 $ mystring = strval（$ mystring）; 
 $ mystring = explode（“ - ”，$ mystring）; 
print_r（  $ mystring）; 
  code>  pre> 
 
 上面的 print_r（） code>显示了一个数组 Array（[0] =＆gt; [1]  =＆gt; 1499） code>。 这意味着它在转换为字符串之前计算 $ mystring  code>。 如何将 0-1499  code>作为整个字符串发送到 explode  code>？ p> 
  div>

答

I have a get variable in this format : 0-1499

When you grab this variable from the URL say.. http://someurl.com/id=0-1499

$var = $_GET['id'];

This will be eventually converted to a string and you don't need to worry about it.

Illustration

enter image description here

FYI : The above illustration used the code which you provided in the question. I didn't code anything extra.

答

You need quotes, sir.

Should work fine like this.

$mystring = "0-1499";
$mystring = explode("-",$mystring);
print_r($mystring);

Without the quotes it was numbers / math.

0 minus 1499 = negative 1499

答

Explode is used for strings.http://php.net/explode

<?php
$mystring = "0-1499";
$a=explode("-",$mystring);
echo $a[0];
echo "<br>";
echo $a[1];

?>

see it working here http://3v4l.org/DEstD

答

As you correctly note it treats the value as arithmetic and ignores the 0- part. If you know that the value you'll get is 0-n for some n, all you need to do is this:

$mystring="0-".$n;
$mystring=explode("0-", $mystring);

but explode here is a bit redundant. So,

$myarr=array();
$myarr[1]=strval($mystring);
$myarr[0]="0";

There you go.

在PHP中将包含数字范围的GET变量转换为字符串

Illustration

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