Merge pull request #9713 from Seldaek/fix-unixy-proxy

Generate binary proxy in PHP if the target binary is detected as a PHP script

src/Composer/Installer/BinaryInstaller.php

@@ -191,6 +191,42 @@ class BinaryInstaller
         $binDir = ProcessExecutor::escape(dirname($binPath));
         $binFile = basename($binPath);
 
+        $binContents = file_get_contents($bin);
+        if (preg_match('{^(?:#!(?:/usr)?/bin/env php|#!(?:/usr)?/bin/php|<?php)\r?\n}', $binContents, $match)) {
+            $proxyCode = trim($match[0]);
+            // carry over the existing shebang if present, otherwise add our own
+            if ($proxyCode === "<?php") {
+                $proxyCode = "#!/usr/bin/env php";
+            }
+            $binPathExported = var_export($binPath, true);
+            return $proxyCode . "\n" . <<<PROXY
+<?php
+
+/**
+ * Proxy PHP file generated by Composer
+ *
+ * This file includes the referenced bin path ($binPath) using eval to remove the shebang if present
+ *
+ * @generated
+ */
+
+\$binPath = realpath(__DIR__ . "/" . $binPathExported);
+\$contents = file_get_contents(\$binPath);
+\$contents = preg_replace('{^#!/.+\\r?\\n<\\?(php)?}', '', \$contents, 1, \$replaced);
+if (\$replaced) {
+    \$contents = strtr(\$contents, array(
+        '__FILE__' => var_export(\$binPath, true),
+        '__DIR__' => var_export(dirname(\$binPath), true),
+    ));
+
+    eval(\$contents);
+    exit(0);
+}
+include \$binPath;
+
+PROXY;
+        }
+
         $proxyCode = <<<PROXY
 #!/usr/bin/env sh