str_replace匹配数组不正确

Question

My code is

$detail='[rollno],[name]';
$details=explode(",", $detail);
$msg="Your rollno is [rollno], Your name is [name] Thanks ";
print str_replace($details, array("abc", "1225"), $msg );
echo "<br/>";
print str_replace($details, array("xyz", "1335"), $msg );
echo "<br/>";

Output is :

Your rollno is abc, Your name is 1225 Thanks 
Your rollno is xyz, Your name is 1335 Thanks 

Array ( [0] => [rollno] [1] => [name] )

I am not able to print correct sequence of name and rollno if the details variable sequence is same as above

Answer 1

Brackets [ ] are a shortcut to create an array, so what you are doing here is:

array(array(0) => array(rollno) array(1) => array(name));

That is wrong syntax.

You must wrap [] with "" or else PHP will think you are trying to create an array.

Maybe you should try this:

$details = ["[rollno]", "[name]"];

or

$details = array("[rollno]","[name]");

PHP will automatically set the numerical keys to 0 and 1.