Fix flaky tests: use deterministic waits and sorted output

- 013: Replace usleep with stream_get_contents to wait for child EOF,
  fixing race under ASAN where child exit takes longer than 200ms
- 014: Collect coroutine results in array with ksort instead of echo,
  fixing non-deterministic scheduling order

Author: EdmondDantes

tests/exec/013-proc_close_child_already_reaped.phpt

@@ -6,10 +6,6 @@ if (!function_exists("proc_open")) echo "skip proc_open() is not available";
 if (DIRECTORY_SEPARATOR === '\\') die('skip Unix-only test');
 $php = getenv('TEST_PHP_EXECUTABLE');
 if ($php === false) echo "skip no php executable defined";
-// Under ASAN, child process exit(42) takes much longer due to leak checking,
-// so usleep(200ms) is not enough for the child to become a zombie.
-// pcntl_waitpid returns 0 (still running) and the external reap never happens.
-if (getenv('USE_ZEND_ALLOC') === '0') die('skip ASAN slows child exit, making race condition unreliable');
 ?>
 --FILE--
 <?php
@@ -36,20 +32,15 @@ $c = spawn(function() use ($php) {
     $status = proc_get_status($process);
     $pid = $status['pid'];
 
-    // Wait for child to exit
-    usleep(200000);
+    // Wait for child to actually exit by reading stdout until EOF.
+    // This is deterministic regardless of ASAN/valgrind slowdown.
+    stream_get_contents($pipes[1]);
 
     // Simulate external reaping (like Go runtime doing waitpid(-1))
     // This steals the zombie before proc_close can get it.
     $reap_status = 0;
     $reaped = pcntl_waitpid($pid, $reap_status, WNOHANG);
-    if ($reaped == $pid) {
-        echo "Zombie reaped externally, exit=" . pcntl_wexitstatus($reap_status) . "\n";
-    } else {
-        echo "Could not reap (result=$reaped), trying waitpid(-1)\n";
-        $reaped = pcntl_waitpid(-1, $reap_status, WNOHANG);
-        echo "waitpid(-1) result: $reaped\n";
-    }
+    echo "Zombie reaped externally, exit=" . pcntl_wexitstatus($reap_status) . "\n";
 
     fclose($pipes[0]);
     fclose($pipes[1]);

tests/pdo_pgsql/014-pdo_pgsql_pool_stmt_cross_coroutine.phpt

@@ -21,7 +21,9 @@ $pdo = AsyncPDOPgSQLTest::poolFactory();
 $pdo->exec("DROP TABLE IF EXISTS test_pgsql_pool_cross");
 $pdo->exec("CREATE TABLE test_pgsql_pool_cross (id SERIAL PRIMARY KEY, val VARCHAR(50))");
 
-$coro1 = spawn(function() use ($pdo) {
+$results = [];
+
+$coro1 = spawn(function() use ($pdo, &$results) {
     $stmtA = $pdo->query("SELECT pg_backend_pid() as pid");
     $pid = $stmtA->fetch()['pid'];
 
@@ -33,12 +35,12 @@ $coro1 = spawn(function() use ($pdo) {
 
     $stmtC = $pdo->query("SELECT pg_backend_pid() as pid");
     $check = $stmtC->fetch()['pid'];
-    echo "Coro1 same conn: " . ($pid === $check ? "yes" : "no") . "\n";
+    $results['coro1'] = ($pid === $check ? "yes" : "no");
 
     return $pid;
 });
 
-$coro2 = spawn(function() use ($pdo) {
+$coro2 = spawn(function() use ($pdo, &$results) {
     $stmtA = $pdo->query("SELECT pg_backend_pid() as pid");
     $pid = $stmtA->fetch()['pid'];
 
@@ -50,14 +52,18 @@ $coro2 = spawn(function() use ($pdo) {
 
     $stmtC = $pdo->query("SELECT pg_backend_pid() as pid");
     $check = $stmtC->fetch()['pid'];
-    echo "Coro2 same conn: " . ($pid === $check ? "yes" : "no") . "\n";
+    $results['coro2'] = ($pid === $check ? "yes" : "no");
 
     return $pid;
 });
 
 $pid1 = await($coro1);
 $pid2 = await($coro2);
 
+ksort($results);
+foreach ($results as $name => $same) {
+    echo "$name same conn: $same\n";
+}
 echo "Different connections across coroutines: " . ($pid1 !== $pid2 ? "yes" : "no") . "\n";
 
 $stmt = $pdo->query("SELECT val FROM test_pgsql_pool_cross ORDER BY id");
@@ -69,8 +75,8 @@ $pdo->exec("DROP TABLE IF EXISTS test_pgsql_pool_cross");
 echo "Done\n";
 ?>
 --EXPECT--
-Coro1 same conn: yes
-Coro2 same conn: yes
+coro1 same conn: yes
+coro2 same conn: yes
 Different connections across coroutines: yes
 Rows: coro1, coro2
 Done