Add Safe PHP functions

vendor/thecodingmachine/phpstan-safe-rule/tests/Rules/data/fopen.php

@@ -0,0 +1,5 @@
+<?php
+
+function foo() {
+    $fp = fopen('foobar', 'r');
+}

vendor/thecodingmachine/phpstan-safe-rule/tests/Rules/data/safe_fopen.php

@@ -0,0 +1,6 @@
+<?php
+use function Safe\fopen;
+
+function foo() {
+    $fp = fopen('foobar', 'r');
+}

vendor/thecodingmachine/phpstan-safe-rule/tests/Rules/data/safe_pregreplace.php

@@ -0,0 +1,7 @@
+<?php
+use function Safe\preg_replace;
+
+$x = preg_replace('/foo/', 'bar', 'baz');
+$y = stripos($x, 'foo');
+
+$x = preg_replace(['/foo/'], ['bar'], ['baz']);

vendor/thecodingmachine/phpstan-safe-rule/tests/Rules/data/undirect_call.php

@@ -0,0 +1,5 @@
+<?php
+function foo() {
+    $toto = 'fopen';
+    $toto('foobar', 'r');
+}