diff --git a/md/install-zint.md b/md/install-zint.md
index 0c3e2fb..f1a9001 100644
--- a/md/install-zint.md
+++ b/md/install-zint.md
@@ -11,4 +11,4 @@ cd build
 cmake ..
 make
 make install
-```
\ No newline at end of file
+```
diff --git a/php/DiskSpace.php b/php/DiskSpace.php
index f477c47..c03abf3 100644
--- a/php/DiskSpace.php
+++ b/php/DiskSpace.php
@@ -94,4 +94,4 @@ Array
     [total] => 1.46 Тб
     [total_bytes] => 1600874422272
 )
-*/
\ No newline at end of file
+*/
diff --git a/php/is-cli.php b/php/is-cli.php
new file mode 100644
index 0000000..ef8012c
--- /dev/null
+++ b/php/is-cli.php
@@ -0,0 +1,12 @@
+<?php
+/**
+ * Определяет запущен ли скрипт через php-cli
+ * Checks if script running under php-cli
+ *
+ * @return bool
+ */
+function is_cli(): bool
+{
+    return PHP_SAPI === 'cli'
+        || (!isset($_SERVER['DOCUMENT_ROOT']) && !isset($_SERVER['REQUEST_URI']));
+}