移动安装目录，支持根目录index.php访问，也可以像tp5一样只对外开放crmeb一个目录

crmeb/install/index.php

@@ -336,17 +336,25 @@ switch ($step) {
 }
 
 function testwrite($d) {
-    $tfile = "_test.txt";
-    $fp = @fopen($d . "/" . $tfile, "w");
-    if (!$fp) {
+    if(is_dir($d)){
+        $tfile = "_test.txt";
+        $fp = @fopen($d . "/" . $tfile, "w");
+        if (!$fp) {
+            return false;
+        }
+        fclose($fp);
+        $rs = @unlink($d . "/" . $tfile);
+        if ($rs) {
+            return true;
+        }
+        return false;
+    }else{
+        if(is_writeable($d)){
+            return true;
+        }
         return false;
     }
-    fclose($fp);
-    $rs = @unlink($d . "/" . $tfile);
-    if ($rs) {
-        return true;
-    }
-    return false;
+
 }
 
 function sql_execute($sql, $tablepre) {

crmeb/install/templates/step2.php

@@ -84,13 +84,15 @@
 		foreach($folder as $dir){
 		     $Testdir = CRMEBDIR.$dir;
 //			 echo $Testdir."<br/>";
-		         dir_create($Testdir);
-			 if(TestWrite($Testdir)){
-			     $w = '<span class="correct_span">&radic;</span>可写 ';
-			 }else{
-			     $w = '<span class="correct_span error_span">&radic;</span>不可写 ';
-				 $err++;
-			 }
+             dir_create($Testdir);
+             if(testwrite($Testdir)){
+                 $w = '<span class="correct_span">&radic;</span>可写 ';
+             }else{
+                 $w = '<span class="correct_span error_span">&radic;</span>不可写 ';
+                 $err++;
+             }
+
+
 			 if(is_readable($Testdir)){
 			     $r = '<span class="correct_span">&radic;</span>可读' ;
 			 }else{