diff --git a/tools/putenv.php b/tools/putenv.php
deleted file mode 100644
index b40c44b..0000000
--- a/tools/putenv.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-namespace Tools;
-
-class PutEnv {
-    private string $file;
-    private string $key;
-    private string $value;
-    public function __construct() {
-        $argv = $_SERVER['argv'];
-        print_r($argv);
-    }
-}
-
-new PutEnv();
diff --git a/tools/putenv/env b/tools/putenv/env
new file mode 100644
index 0000000..d3123e4
--- /dev/null
+++ b/tools/putenv/env
@@ -0,0 +1,5 @@
+name=value
+name2="value 2"
+#name3=value3
+name4 = value4
+name5 = "value 5"
\ No newline at end of file
diff --git a/tools/putenv/putenv.php b/tools/putenv/putenv.php
new file mode 100644
index 0000000..029a4cd
--- /dev/null
+++ b/tools/putenv/putenv.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Tools;
+
+class PutEnv {
+    private string $file;
+    private string $key;
+    private string $value;
+    private array $content;
+    public function __construct() {
+        $argv = $_SERVER['argv'];
+        $argc = sizeof($argv);
+        switch($argc) {
+            case 3:
+                $this->file = $argv[1];
+                $this->key = $argv[2];
+                $this->value -> $argv[3];
+            break;
+            
+            case 2:
+                $this->file = $argv[1];
+                $this->key = $argv[2];
+                $this->value = fgets(STDIN);
+            break;
+        }
+        if (!file_exists($this->file)) {
+            throw new Exception('File not found');
+        }
+        $this->content = file($this->file);
+        foreach ($this->content as $l => $line) {
+            if (!str_starts_with($line, $this->key)) {
+                continue;
+            }
+            $next = trim(substr($line, strlen($this->key)));
+            if (strlen($next) === 0 || $next[0] !== '=') {
+                continue;
+            }
+            $key = $this->key;
+            $value = $this->value;
+            if (strpos($value, ' ') !== false) {
+                $value = '"' . addslashes($value) . '"';
+            }
+            $this->content[$l] = $key . '=' . $value;
+        }
+        $content = implode("\n", $this->content);
+        file_put_contents($this->file, $content);
+    }
+}
+
+new PutEnv();