解析错误：语法错误，第4行C：\ xampp \ htdocs \ capital.php中的意外T_DOUBLE_ARROW [关闭]

<?php

    $a=$_POST["t1"];
    $ar=$array("gujarat"=>"gandhinagar"
        ,"mumbai"=>"maharashtra"
        ,"madras"=>"channie");

    echo "capital is=" . $ar;

?>

Parse error: syntax error, unexpected T_DOUBLE_ARROW in C:\xampp\htdocs\capital.php on line 4

You have a dollar sign ($) before array(), which is causing PHP to interpret this as a reference to the $array variable, when in fact you want to create a new array:

$ar=$array("gujarat"=>"gandhinagar"
    ^
    Here