added php download of membershipments

vendor/illuminate/support/Traits/Conditionable.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Illuminate\Support\Traits;
+
+trait Conditionable
+{
+    /**
+     * Apply the callback if the given "value" is truthy.
+     *
+     * @param  mixed  $value
+     * @param  callable  $callback
+     * @param  callable|null  $default
+     * @return $this|mixed
+     */
+    public function when($value, $callback, $default = null)
+    {
+        if ($value) {
+            return $callback($this, $value) ?: $this;
+        } elseif ($default) {
+            return $default($this, $value) ?: $this;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Apply the callback if the given "value" is falsy.
+     *
+     * @param  mixed  $value
+     * @param  callable  $callback
+     * @param  callable|null  $default
+     * @return $this|mixed
+     */
+    public function unless($value, $callback, $default = null)
+    {
+        if (! $value) {
+            return $callback($this, $value) ?: $this;
+        } elseif ($default) {
+            return $default($this, $value) ?: $this;
+        }
+
+        return $this;
+    }
+}