thing for generating package.xml

gen.php

<?php
$version = $argv[1];

$format = [
	"SCRIPTS" => "\t<file name=\"%s\" role=\"doc\" />",
	"TESTS"    => "\t<file name=\"%s\" role=\"test\" />",
];

$extensions = [
	"SCRIPTS" => ["php"],
	"TESTS"    => ["phpt", "inc"],
];

$source = file_get_contents(sprintf("%s/template.xml", dirname(__FILE__)));

foreach ([
	"SCRIPTS" => "scripts",
	"TESTS"    => "tests",
] as $target => $dir) {
	$found  = [];

	foreach (scandir($dir) as $file) {
		if ($file == "." || $file == "..")
			continue;

		$explode = preg_split("~\.~", $file);
		$explode = $explode[count($explode)-1];
		if (in_array($explode, $extensions[$target])) {
			$found[] = sprintf(
				$format[$target], "{$dir}/{$file}");
		}
	}

	$source = str_replace(
		sprintf("{%s}", $target), 
		implode("\n", $found), $source);		
}

$source = str_replace([
	"{DATE}",
	"{TIME}",
	"{VERSION}"
], [	
	date("Y-m-d"),
	date("H:m:s"),
	$version
], $source);

echo $source;
?>

template.xml

<?xml version="1.0" encoding="UTF-8"?>
<package packagerversion="1.9.4" version="2.0" xmlns="http://pear.php.net/dtd/package-2.0" xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 http://pear.php.net/dtd/tasks-1.0.xsd http://pear.php.net/dtd/package-2.0 http://pear.php.net/dtd/package-2.0.xsd">
 <name>ast</name>
 <channel>pecl.php.net</channel>
 <summary>PHP AST</summary>
 <description>Extension exposing PHP 7 abstract syntax tree</description>
 <lead>
  <name>Nikita Popov</name>
  <user>nikic</user>
  <email>nikic@php.net</email>
  <active>yes</active>
 </lead>
 <date>{DATE}</date>
 <time>{TIME}</time>
 <version>
  <release>{VERSION}</release>
  <api>{VERSION}</api>
 </version>
 <stability>
  <release>stable</release>
  <api>stable</api>
 </stability>
 <license uri="http://www.php.net/license">PHP License</license>
 <notes>
 non-empty-notes
 </notes>
 <contents>
  <dir name="/">
   {SCRIPTS}
   {TESTS}
	<file name="config.m4" role="src" />
	<file name="config.w32" role="src" />
	<file name="LICENSE" role="doc" />
	<file name="ast.c" role="src" />
	<file name="ast_data.c" role="src" />
	<file name="ast_str_defs.h" role="src" />
	<file name="php_ast.h" role="src" />
	<file name="ast_stub.php" role="doc" />
	<file name="util.php" role="doc" />
	<file name="README.md" role="doc" />
  </dir>
 </contents>
 <dependencies>
  <required>
   <php>
    <min>7.0.0RC5</min>
   </php>
   <pearinstaller>
    <min>1.4.0b1</min>
   </pearinstaller>
  </required>
 </dependencies>
 <providesextension>ast</providesextension>
 <extsrcrelease />
</package>