PHP: Factored out code into a helper function.

We're going to use zend_stream_init_filename in a following commit.  To
reduce the diff of that change, move the current code that will be
replaced, to a function that has the same interface.

We use strlen(3) here to be able to use an interface without passing the
length, but we will remove that call in a following code, so it has no
performance issues.

Co-developed-by: Andrew Clayton <a.clayton@nginx.com>
Signed-off-by: Alejandro Colomar <alx@nginx.com>
Reviewed-by: Andrew Clayton <a.clayton@nginx.com>
Cc: Andrei Zeliankou <zelenkov@nginx.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

Author: alejandro-colomar

src/nxt_php_sapi.c

@@ -106,6 +106,8 @@ static nxt_int_t nxt_php_do_301(nxt_unit_request_info_t *req);
 static void nxt_php_request_handler(nxt_unit_request_info_t *req);
 static void nxt_php_dynamic_request(nxt_php_run_ctx_t *ctx,
     nxt_unit_request_t *r);
+static void nxt_zend_stream_init_filename(zend_file_handle *handle,
+    const char *filename);
 static void nxt_php_execute(nxt_php_run_ctx_t *ctx, nxt_unit_request_t *r);
 nxt_inline void nxt_php_vcwd_chdir(nxt_unit_request_info_t *req, u_char *dir);
 
@@ -1109,6 +1111,21 @@ nxt_php_dynamic_request(nxt_php_run_ctx_t *ctx, nxt_unit_request_t *r)
 }
 
 
+static void
+nxt_zend_stream_init_filename(zend_file_handle *handle, const char *filename)
+{
+    nxt_memzero(handle, sizeof(zend_file_handle));
+
+    handle->type = ZEND_HANDLE_FILENAME;
+#if (PHP_VERSION_ID >= 80100)
+    handle->filename = zend_string_init(filename, strlen(filename), 0);
+    handle->primary_script = 1;
+#else
+    handle->filename = filename;
+#endif
+}
+
+
 static void
 nxt_php_execute(nxt_php_run_ctx_t *ctx, nxt_unit_request_t *r)
 {
@@ -1179,16 +1196,8 @@ nxt_php_execute(nxt_php_run_ctx_t *ctx, nxt_unit_request_t *r)
         nxt_php_vcwd_chdir(ctx->req, ctx->script_dirname.start);
     }
 
-    nxt_memzero(&file_handle, sizeof(file_handle));
-
-    file_handle.type = ZEND_HANDLE_FILENAME;
-#if (PHP_VERSION_ID >= 80100)
-    file_handle.filename = zend_string_init((char *) ctx->script_filename.start,
-                                            ctx->script_filename.length, 0);
-    file_handle.primary_script = 1;
-#else
-    file_handle.filename = (char *) ctx->script_filename.start;
-#endif
+    nxt_zend_stream_init_filename(&file_handle,
+                                  (const char *) ctx->script_filename.start);
 
     php_execute_script(&file_handle TSRMLS_CC);