Revert "ext/standard/tests: work around Windows quoting with tempfiles."

This reverts commit 077d7d6.

As it breaks tests in 8.5 and above.

Author: Girgias

ext/standard/tests/general_functions/proc_open_null.phpt

@@ -5,9 +5,7 @@ Null pipes in proc_open()
 
 $php = getenv('TEST_PHP_EXECUTABLE');
 $args = getenv('TEST_PHP_EXTRA_ARGS');
-$fn = tempnam(sys_get_temp_dir(), "PROC_OPEN_TEST");
-$cmd = "$php $args " . escapeshellarg($fn);
-file_put_contents($fn, '<?php echo "Test"; fprintf(STDERR, "Error");');
+$cmd = "$php $args -r 'echo \"Test\"; fprintf(STDERR, \"Error\");'";
 
 $proc = proc_open($cmd, [1 => ['null'], 2 => ['pipe', 'w']], $pipes);
 var_dump($pipes);
@@ -18,17 +16,16 @@ $proc = proc_open($cmd, [1 => ['pipe', 'w'], 2 => ['null']], $pipes);
 var_dump($pipes);
 var_dump(stream_get_contents($pipes[1]));
 proc_close($proc);
-unlink($fn);
 
 ?>
 --EXPECT--
 array(1) {
   [2]=>
-  resource(6) of type (stream)
+  resource(4) of type (stream)
 }
 string(5) "Error"
 array(1) {
   [1]=>
-  resource(8) of type (stream)
+  resource(6) of type (stream)
 }
 string(4) "Test"

ext/standard/tests/general_functions/proc_open_redirect.phpt

@@ -26,9 +26,7 @@ try {
 }
 
 echo "\nWith pipe:\n";
-$fn = tempnam(sys_get_temp_dir(), "PROC_OPEN_TEST");
-file_put_contents($fn, '<?php echo "Test\n"; fprintf(STDERR, "Error");');
-$cmd = "$php $args " . escapeshellarg($fn);
+$cmd = "$php $args -r 'echo \"Test\n\"; fprintf(STDERR, \"Error\");'";
 $proc = proc_open($cmd, [1 => ['pipe', 'w'], 2 => ['redirect', 1]], $pipes);
 var_dump($pipes);
 var_dump(stream_get_contents($pipes[1]));
@@ -54,7 +52,6 @@ unlink($fileName);
 echo "\nWith inherited stdout:\n";
 $proc = proc_open($cmd, [2 => ['redirect', 1]], $pipes);
 proc_close($proc);
-unlink($fn);
 
 ?>
 --EXPECTF--
@@ -66,7 +63,7 @@ Warning: proc_open(): Redirection target 42 not found in %s
 With pipe:
 array(1) {
   [1]=>
-  resource(6) of type (stream)
+  resource(4) of type (stream)
 }
 string(10) "Test
 Error"