Fix bug #5825 (#5826)

Author: NathanFreeman

ext-src/swoole_process.cc

@@ -347,6 +347,7 @@ static PHP_METHOD(swoole_process, __construct) {
         }
     }
 
+    zend_update_property_long(swoole_process_ce, SW_Z8_OBJ_P(ZEND_THIS), ZEND_STRL("id"), process->id);
     zend_update_property(
         swoole_process_ce, SW_Z8_OBJ_P(ZEND_THIS), ZEND_STRL("callback"), ZEND_CALL_ARG(execute_data, 1));
     php_swoole_process_set_worker(ZEND_THIS, process, enable_coroutine, pipe_type);

tests/swoole_process/process_id.phpt

@@ -0,0 +1,18 @@
+--TEST--
+swoole_process: Github bug #5825
+--SKIPIF--
+<?php require __DIR__ . '/../include/skipif.inc'; ?>
+--FILE--
+<?php
+require __DIR__ . '/../include/bootstrap.php';
+
+use Swoole\Process;
+for ($n = 1; $n <= 3; $n++) {
+    $process = new Process(function ($process) use ($n) {
+        Assert::same($process->id, $n);
+    });
+    Assert::same($process->id, $n);
+    $process->start();
+}
+?>
+--EXPECT--