php $ _GET [“variable”]未设置，即使它应该[关闭]

in my php file I have this:

<script>var editMode = 
<?php if(isset($_Get["e"])){
        if($_Get["e"]){
            echo "true";
        }else{
            echo "false";
        }
    }else{
        echo "0";
    }
?>;</script>

but when I visit the page with (my domain name)/EditMap.php?e=true the php code executed the echo "0" line which means for some reason it isnt getting the value of e from the url.

Use proper syntax for GET ie. $_GET

<script>var editMode = 
<?php if(isset($_GET["e"])){
        if($_GET["e"]){
            echo "true";
        }else{
            echo "false";
        }
    }else{
        echo "0";
    }
?>;</script>

Use $_GET['e'] instead of $_Get['e'].