diff --git a/.idea/nulib.iml b/.idea/nulib.iml
index 265b084..4a9634a 100644
--- a/.idea/nulib.iml
+++ b/.idea/nulib.iml
@@ -6,6 +6,8 @@
       <sourceFolder url="file://$MODULE_DIR$/php/tests" isTestSource="true" packagePrefix="nulib\" />
       <sourceFolder url="file://$MODULE_DIR$/php/src_output" isTestSource="false" packagePrefix="nulib\output\" />
       <sourceFolder url="file://$MODULE_DIR$/php/src_web" isTestSource="false" packagePrefix="nulib\web\" />
+      <sourceFolder url="file://$MODULE_DIR$/php/src_ref" isTestSource="false" packagePrefix="nulib\ref\" />
+      <sourceFolder url="file://$MODULE_DIR$/php/src_sys" isTestSource="false" packagePrefix="nulib\sys\" />
       <excludeFolder url="file://$MODULE_DIR$/vendor" />
     </content>
     <orderEntry type="inheritedJdk" />
diff --git a/composer.json b/composer.json
index 879eb3b..3150c95 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,8 @@
 	"autoload": {
 		"psr-4": {
 			"nulib\\": "php/src_base",
+			"nulib\\ref\\": "php/src_ref",
+			"nulib\\sys\\": "php/src_sys",
 			"nulib\\output\\": "php/src_output",
 			"nulib\\web\\": "php/src_web"
 		}
diff --git a/php/src_ref/sys/ref_func.php b/php/src_ref/sys/ref_func.php
new file mode 100644
index 0000000..12523f8
--- /dev/null
+++ b/php/src_ref/sys/ref_func.php
@@ -0,0 +1,12 @@
+<?php
+namespace nulib\ref\sys;
+
+class ref_func {
+  const CALL_ALL_PARAMS_SCHEMA = [
+    "prefix" => ["string", null, "Ne sélectionner que les méthode dont le nom commence par ce préfixe"],
+    "args" => ["?array", null, "Arguments avec lesquels appeler les méthodes"],
+    "static_only" => ["bool", false, "N'appeler que les méthodes statiques si un objet est spécifié"],
+    "include" => ["?array", null, "N'inclure que les méthodes dont le nom correspond à ce motif, qui peut être une sous-chaine ou une expression régulière"],
+    "exclude" => ["?array", null, "Exclure les méthodes dont le nom correspond à ce motif, qui peut être une sous-chaine ou une expression régulière"],
+  ];
+}
diff --git a/php/src_sys/README.md b/php/src_sys/README.md
new file mode 100644
index 0000000..08ccfe2
--- /dev/null
+++ b/php/src_sys/README.md
@@ -0,0 +1,5 @@
+# nulib\sys
+
+Ce package contient des services généraux spécifiques à PHP
+
+-*- coding: utf-8 mode: markdown -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8:noeol:binary
\ No newline at end of file
diff --git a/php/src_sys/func.php b/php/src_sys/func.php
new file mode 100644
index 0000000..d48287d
--- /dev/null
+++ b/php/src_sys/func.php
@@ -0,0 +1,430 @@
+<?php
+namespace nulib\sys;
+
+use Closure;
+use nulib\cl;
+use nulib\ValueException;
+use nur\sery\ref\sys\ref_func;
+use nur\sery\schema\Schema;
+use ReflectionClass;
+use ReflectionFunction;
+use ReflectionMethod;
+
+/**
+ * Class func: outils pour appeler des fonctions et méthodes dynamiquement
+ */
+class func {
+  /**
+   * tester si $func est une chaine de la forme "XXX::method" où XXX est une
+   * chaine quelconque éventuellement vide, ou un tableau de la forme ["method"]
+   * ou [anything, "method", ...]
+   */
+  static final function is_static($func): bool {
+    if (is_string($func)) {
+      $pos = strpos($func, "::");
+      if ($pos === false) return false;
+      return $pos + 2 < strlen($func);
+    } elseif (is_array($func) && array_key_exists(0, $func)) {
+      $count = count($func);
+      if ($count == 1) {
+        return is_string($func[0]) && strlen($func[0]) > 0;
+      } elseif ($count > 1) {
+        if (!array_key_exists(1, $func)) return false;
+        return is_string($func[1]) && strlen($func[1]) > 0;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * si $func est une chaine de la forme "::method" alors la remplacer par la
+   * chaine "$class::method"
+   *
+   * si $func est un tableau de la forme ["method"] ou [null, "method"], alors
+   * le remplacer par [$class, "method"]
+   *
+   * on assume que {@link is_static()}($func) retourne true
+   *
+   * @return bool true si la correction a été faite
+   */
+  static final function fix_static(&$func, $class): bool {
+    if (is_object($class)) $class = get_class($class);
+
+    if (is_string($func) && substr($func, 0, 2) == "::") {
+      $func = "$class$func";
+      return true;
+    } elseif (is_array($func) && array_key_exists(0, $func)) {
+      $count = count($func);
+      if ($count == 1) {
+        $func = [$class, $func[0]];
+        return true;
+      } elseif ($count > 1 && $func[0] === null) {
+        $func[0] = $class;
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /** tester si $method est une chaine de la forme "->method" */
+  private static function isam($method): bool {
+    return is_string($method)
+      && strlen($method) > 2
+      && substr($method, 0, 2) == "->";
+  }
+
+  /**
+   * tester si $func est une chaine de la forme "->method" ou un tableau de la
+   * forme ["->method", ...] ou [anything, "->method", ...]
+   */
+  static final function is_method($func): bool {
+    if (is_string($func)) {
+      return self::isam($func);
+    } elseif (is_array($func) && array_key_exists(0, $func)) {
+      if (self::isam($func[0])) {
+        # ["->method", ...]
+        return true;
+      }
+      if (array_key_exists(1, $func) && self::isam($func[1])) {
+        # [anything, "->method", ...]
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * si $func est une chaine de la forme "->method" alors la remplacer par le
+   * tableau [$object, "method"]
+   *
+   * si $func est un tableau de la forme ["->method"] ou [anything, "->method"],
+   * alors le remplacer par [$object, "method"]
+   *
+   * @return bool true si la correction a été faite
+   */
+  static final function fix_method(&$func, $object): bool {
+    if (!is_object($object)) return false;
+
+    if (is_string($func)) {
+      if (self::isam($func)) {
+        $func = [$object, substr($func, 2)];
+        return true;
+      }
+    } elseif (is_array($func) && array_key_exists(0, $func)) {
+      if (self::isam($func[0])) $func = array_merge([null], $func);
+      if (count($func) > 1 && array_key_exists(1, $func) && self::isam($func[1])) {
+        $func[0] = $object;
+        $func[1] = substr($func[1], 2);
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * si $func est un tableau de plus de 2 éléments, alors déplacer les éléments
+   * supplémentaires au début de $args. par exemple:
+   * ~~~
+   * $func = ["class", "method", "arg1", "arg2"];
+   * $args = ["arg3"];
+   * func::fix_args($func, $args)
+   * # $func === ["class", "method"]
+   * # $args === ["arg1", "arg2", "arg3"]
+   * ~~~
+   *
+   * @return bool true si la correction a été faite
+   */
+  static final function fix_args(&$func, ?array &$args): bool {
+    if ($args === null) $args = [];
+    if (is_array($func) && count($func) > 2) {
+      $prefix_args = array_slice($func, 2);
+      $func = array_slice($func, 0, 2);
+      $args = array_merge($prefix_args, $args);
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * s'assurer que $func est un appel de méthode ou d'une méthode statique;
+   * et renseigner le cas échéant les arguments. si $func ne fait pas mention
+   * de la classe ou de l'objet, le renseigner avec $class_or_object.
+   *
+   * @return bool true si c'est une fonction valide. il ne reste plus qu'à
+   * l'appeler avec {@link call()}
+   */
+  static final function check_func(&$func, $class_or_object, &$args=null): bool {
+    if ($func instanceof Closure) return true;
+    if (self::is_method($func)) {
+      # méthode
+      self::fix_method($func, $class_or_object);
+      self::fix_args($func, $args);
+      return true;
+    } elseif (self::is_static($func)) {
+      # méthode statique
+      self::fix_static($func, $class_or_object);
+      self::fix_args($func, $args);
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Comme {@link check_func()} mais lance une exception si la fonction est
+   * invalide
+   *
+   * @throws ValueException si $func n'est pas une fonction ou une méthode valide
+   */
+  static final function ensure_func(&$func, $class_or_object, &$args=null): void {
+    if (!self::check_func($func, $class_or_object, $args)) {
+      throw ValueException::invalid_type($func, "callable");
+    }
+  }
+
+  static final function _prepare($func): array {
+    $object = null;
+    if (is_callable($func)) {
+      if (is_array($func)) {
+        $rf = new ReflectionMethod(...$func);
+        $object = $func[0];
+        if (is_string($object)) $object = null;
+      } elseif ($func instanceof Closure) {
+        $rf = new ReflectionFunction($func);
+      } elseif (is_string($func) && strpos($func, "::") === false) {
+        $rf = new ReflectionFunction($func);
+      } else {
+        $rf = new ReflectionMethod($func);
+      }
+    } elseif ($func instanceof ReflectionMethod) {
+      $rf = $func;
+    } elseif ($func instanceof ReflectionFunction) {
+      $rf = $func;
+    } elseif (is_array($func) && count($func) == 2 && isset($func[0]) && isset($func[1])
+      && ($func[1] instanceof ReflectionMethod || $func[1] instanceof ReflectionFunction)) {
+      $object = $func[0];
+      if (is_string($object)) $object = null;
+      $rf = $func[1];
+    } elseif (is_string($func) && strpos($func, "::") === false) {
+      $rf = new ReflectionFunction($func);
+    } else {
+      throw ValueException::invalid_type($func, "callable");
+    }
+    $minArgs = $rf->getNumberOfRequiredParameters();
+    $maxArgs = $rf->getNumberOfParameters();
+    $variadic = $rf->isVariadic();
+    return [$rf instanceof ReflectionMethod, $object, $rf, $minArgs, $maxArgs, $variadic];
+  }
+
+  static final function _fill(array $context, array &$args): void {
+    $minArgs = $context[3];
+    $maxArgs = $context[4];
+    $variadic = $context[5];
+    if (!$variadic) $args = array_slice($args, 0, $maxArgs);
+    while (count($args) < $minArgs) $args[] = null;
+  }
+
+  static final function _call($context, array $args) {
+    self::_fill($context, $args);
+    $use_object = $context[0];
+    $object = $context[1];
+    $method = $context[2];
+    if ($use_object) {
+      if (count($args) === 0) return $method->invoke($object);
+      else return $method->invokeArgs($object, $args);
+    } else {
+      if (count($args) === 0) return $method->invoke();
+      else return $method->invokeArgs($args);
+    }
+  }
+
+  /**
+   * Appeler la fonction spécifiée avec les arguments spécifiés.
+   * Adapter $args en fonction du nombre réel d'arguments de $func
+   *
+   * @param callable|ReflectionFunction|ReflectionMethod $func
+   */
+  static final function call($func, ...$args) {
+    return self::_call(self::_prepare($func), $args);
+  }
+
+  /** remplacer $value par $func($value, ...$args) */
+  static final function apply(&$value, $func, ...$args): void {
+    if ($func !== null) {
+      if ($args) $args = array_merge([$value], $args);
+      else $args = [$value];
+      $value = self::call($func, ...$args);
+    }
+  }
+
+  const MASK_PS = ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_STATIC;
+  const MASK_P = ReflectionMethod::IS_PUBLIC;
+  const METHOD_PS = ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_STATIC;
+  const METHOD_P = ReflectionMethod::IS_PUBLIC;
+
+  private static final function matches(string $name, array $includes, array $excludes): bool {
+    if ($includes) {
+      $matches = false;
+      foreach ($includes as $include) {
+        if (substr($include, 0, 1) == "/") {
+          # expression régulière
+          if (preg_match($include, $name)) {
+            $matches = true;
+            break;
+          }
+        } else {
+          # tester la présence de la sous-chaine
+          if (strpos($name, $include) !== false) {
+            $matches = true;
+            break;
+          }
+        }
+      }
+      if (!$matches) return false;
+    }
+    foreach ($excludes as $exclude) {
+      if (substr($exclude, 0, 1) == "/") {
+        # expression régulière
+        if (preg_match($exclude, $name)) return false;
+      } else {
+        # tester la présence de la sous-chaine
+        if (strpos($name, $exclude) !== false) return false;
+      }
+    }
+    return true;
+  }
+
+  /**
+   * retourner la liste des méthodes de $class_or_object qui correspondent au
+   * filtre $options. le filtre doit respecter le schéme {@link CALL_ALL_PARAMS_SCHEMA}
+   */
+  static function get_all($class_or_object, $params=null): array {
+    Schema::nv($paramsv, $params, null, $schema, ref_func::CALL_ALL_PARAMS_SCHEMA);
+    if (is_callable($class_or_object, true) && is_array($class_or_object)) {
+      # callable sous forme de tableau
+      $class_or_object = $class_or_object[0];
+    }
+    if (is_string($class_or_object)) {
+      # lister les méthodes publiques statiques de la classe
+      $mask = self::MASK_PS;
+      $expected = self::METHOD_PS;
+      $c = new ReflectionClass($class_or_object);
+    } elseif (is_object($class_or_object)) {
+      # lister les méthodes publiques de la classe
+      $c = new ReflectionClass($class_or_object);
+      $mask = $params["static_only"]? self::MASK_PS: self::MASK_P;
+      $expected = $params["static_only"]? self::METHOD_PS: self::METHOD_P;
+    } else {
+      throw new ValueException("$class_or_object: vous devez spécifier une classe ou un objet");
+    }
+    $prefix = $params["prefix"]; $prefixlen = strlen($prefix);
+    $args = $params["args"];
+    $includes = $params["include"];
+    $excludes = $params["exclude"];
+    $methods = [];
+    foreach ($c->getMethods() as $m) {
+      if (($m->getModifiers() & $mask) != $expected) continue;
+      $name = $m->getName();
+      if (substr($name, 0, $prefixlen) != $prefix) continue;
+      if (!self::matches($name, $includes, $excludes)) continue;
+      $methods[] = cl::merge([$class_or_object, $name], $args);
+    }
+    return $methods;
+  }
+
+  /**
+   * Appeler toutes les méthodes publiques de $object_or_class et retourner un
+   * tableau [$method_name => $return_value] des valeurs de retour.
+   */
+  static final function call_all($class_or_object, $params=null): array {
+    $methods = self::get_all($class_or_object, $params);
+    $values = [];
+    foreach ($methods as $method) {
+      self::fix_args($method, $args);
+      $values[$method[1]] = self::call($method, ...$args);
+    }
+    return $values;
+  }
+
+  /**
+   * tester si $func est une chaine de la forme "XXX" où XXX est une classe
+   * valide, ou un tableau de la forme ["XXX", ...]
+   *
+   * NB: il est possible d'avoir {@link is_static()} et {@link is_class()}
+   * vraies pour la même valeur. s'il faut supporter les deux cas, appeler
+   * {@link is_class()} d'abord
+   */
+  static final function is_class($class): bool {
+    if (is_string($class)) {
+      return class_exists($class);
+    } elseif (is_array($class) && array_key_exists(0, $class)) {
+      return class_exists($class[0]);
+    }
+    return false;
+  }
+
+  /**
+   * en assumant que {@link is_class()} est vrai, si $class est un tableau de
+   * plus de 1 éléments, alors déplacer les éléments supplémentaires au début de
+   * $args. par exemple:
+   * ~~~
+   * $class = ["class", "arg1", "arg2"];
+   * $args = ["arg3"];
+   * func::fix_class_args($class, $args)
+   * # $class === "class"
+   * # $args === ["arg1", "arg2", "arg3"]
+   * ~~~
+   *
+   * @return bool true si la correction a été faite
+   */
+  static final function fix_class_args(&$class, ?array &$args): bool {
+    if ($args === null) $args = [];
+    if (is_array($class)) {
+      if (count($class) > 1) {
+        $prefix_args = array_slice($class, 1);
+        $class = array_slice($class, 0, 1)[0];
+        $args = array_merge($prefix_args, $args);
+      } else {
+        $class = $class[0];
+      }
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * s'assurer que $class est une classe et renseigner le cas échéant les
+   * arguments.
+   *
+   * @return bool true si c'est une classe valide. il ne reste plus qu'à
+   * l'instancier avec {@link cons()}
+   */
+  static final function check_class(&$class, &$args=null): bool {
+    if (self::is_class($class)) {
+      self::fix_class_args($class, $args);
+      return true;
+    }
+    return false;
+  }
+
+  /**
+   * Instancier la classe avec les arguments spécifiés.
+   * Adapter $args en fonction du nombre réel d'arguments du constructeur
+   */
+  static final function cons(string $class, ...$args) {
+    $c = new ReflectionClass($class);
+    $rf = $c->getConstructor();
+    if ($rf === null) {
+      return $c->newInstance();
+    } else {
+      if (!$rf->isVariadic()) {
+        $minArgs = $rf->getNumberOfRequiredParameters();
+        $maxArgs = $rf->getNumberOfParameters();
+        $args = array_slice($args, 0, $maxArgs);
+        while (count($args) < $minArgs) {
+          $args[] = null;
+        }
+      }
+      return $c->newInstanceArgs($args);
+    }
+  }
+}
diff --git a/php/tests/sys/funcTest.php b/php/tests/sys/funcTest.php
new file mode 100644
index 0000000..35f1f37
--- /dev/null
+++ b/php/tests/sys/funcTest.php
@@ -0,0 +1,247 @@
+<?php
+
+namespace {
+  function func36() {
+    return 36;
+  }
+}
+
+namespace nulib\sys {
+  use nulib\tests\TestCase;
+
+  class funcTest extends TestCase {
+    function testIs_static() {
+      self::assertFalse(func::is_static(null));
+      self::assertFalse(func::is_static(""));
+      self::assertFalse(func::is_static("::"));
+      self::assertFalse(func::is_static("xxx::"));
+      self::assertTrue(func::is_static("::xxx"));
+      self::assertFalse(func::is_static([]));
+      self::assertFalse(func::is_static([""]));
+      self::assertTrue(func::is_static(["xxx"]));
+      self::assertFalse(func::is_static([null, ""]));
+      self::assertTrue(func::is_static([null, "yyy"]));
+      self::assertFalse(func::is_static(["xxx", ""]));
+      self::assertTrue(func::is_static(["xxx", "yyy"]));
+      self::assertTrue(func::is_static([null, "yyy", "aaa"]));
+      self::assertTrue(func::is_static(["xxx", "yyy", "aaa"]));
+    }
+    
+    function testFix_static() {
+      $class = "class";
+      $func = null;
+        func::fix_static($func, $class);
+        self::assertSame(null, $func);
+      $func = "";
+        func::fix_static($func, $class);
+        self::assertSame("", $func);
+      $func = "::";
+        func::fix_static($func, $class);
+        self::assertSame("class::", $func);
+      $func = "xxx::";
+        func::fix_static($func, $class);
+        self::assertSame("xxx::", $func);
+      $func = "::xxx";
+        func::fix_static($func, $class);
+        self::assertSame("class::xxx", $func);
+      $func = [];
+        func::fix_static($func, $class);
+        self::assertSame([], $func);
+      $func = [""];
+        func::fix_static($func, $class);
+        self::assertSame(["class", ""], $func);
+      $func = ["xxx"];
+        func::fix_static($func, $class);
+        self::assertSame(["class", "xxx"], $func);
+      $func = ["xxx", ""];
+        func::fix_static($func, $class);
+        self::assertSame(["xxx", ""], $func);
+      $func = [null, "yyy"];
+        func::fix_static($func, $class);
+        self::assertSame(["class", "yyy"], $func);
+      $func = ["xxx", "yyy"];
+        func::fix_static($func, $class);
+        self::assertSame(["xxx", "yyy"], $func);
+      $func = [null, "yyy", "aaa"];
+        func::fix_static($func, $class);
+        self::assertSame(["class", "yyy", "aaa"], $func);
+      $func = ["xxx", "yyy", "aaa"];
+        func::fix_static($func, $class);
+        self::assertSame(["xxx", "yyy", "aaa"], $func);
+    }
+
+    function testIs_method() {
+      self::assertFalse(func::is_method(null));
+      self::assertFalse(func::is_method(""));
+      self::assertFalse(func::is_method("->"));
+      self::assertTrue(func::is_method("->xxx"));
+      self::assertFalse(func::is_method([]));
+      self::assertFalse(func::is_method([""]));
+      self::assertTrue(func::is_method(["->xxx"]));
+      self::assertTrue(func::is_method(["->xxx", "aaa"]));
+      self::assertFalse(func::is_method([null, "->"]));
+      self::assertTrue(func::is_method([null, "->yyy"]));
+      self::assertFalse(func::is_method(["xxx", "->"]));
+      self::assertTrue(func::is_method(["xxx", "->yyy"]));
+      self::assertTrue(func::is_method([null, "->yyy", "aaa"]));
+      self::assertTrue(func::is_method(["xxx", "->yyy", "aaa"]));
+    }
+
+    function testFix_method() {
+      $object = new \stdClass();
+      $func= null;
+        func::fix_method($func, $object);
+        self::assertSame(null, $func);
+      $func= "";
+        func::fix_method($func, $object);
+        self::assertSame("", $func);
+      $func= "->";
+        func::fix_method($func, $object);
+        self::assertSame("->", $func);
+      $func= "->xxx";
+        func::fix_method($func, $object);
+        self::assertSame([$object, "xxx"], $func);
+      $func= [];
+        func::fix_method($func, $object);
+        self::assertSame([], $func);
+      $func= [""];
+        func::fix_method($func, $object);
+        self::assertSame([""], $func);
+      $func= ["->xxx"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "xxx"], $func);
+      $func= ["->xxx", "aaa"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "xxx", "aaa"], $func);
+      $func= [null, "->"];
+        func::fix_method($func, $object);
+        self::assertSame([null, "->"], $func);
+      $func= [null, "->yyy"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "yyy"], $func);
+      $func= ["xxx", "->"];
+        func::fix_method($func, $object);
+        self::assertSame(["xxx", "->"], $func);
+      $func= ["xxx", "->yyy"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "yyy"], $func);
+      $func= [null, "->yyy", "aaa"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "yyy", "aaa"], $func);
+      $func= ["xxx", "->yyy", "aaa"];
+        func::fix_method($func, $object);
+        self::assertSame([$object, "yyy", "aaa"], $func);
+    }
+
+    function testCall() {
+      self::assertSame(36, func::call("func36"));
+      self::assertSame(12, func::call(TC::class."::method"));
+      self::assertSame(12, func::call([TC::class, "method"]));
+      $closure = function() {
+        return 21;
+      };
+      self::assertSame(21, func::call($closure));
+    }
+
+    function testCall_all() {
+      $c1 = new C1();
+      $c2 = new C2();
+      $c3 = new C3();
+
+      self::assertSameValues([11, 12], func::call_all(C1::class));
+      self::assertSameValues([11, 12, 21, 22], func::call_all($c1));
+      self::assertSameValues([13, 11, 12], func::call_all(C2::class));
+      self::assertSameValues([13, 23, 11, 12, 21, 22], func::call_all($c2));
+      self::assertSameValues([111, 13, 12], func::call_all(C3::class));
+      self::assertSameValues([111, 121, 13, 23, 12, 22], func::call_all($c3));
+
+      $options = "conf";
+      self::assertSameValues([11], func::call_all(C1::class, $options));
+      self::assertSameValues([11, 21], func::call_all($c1, $options));
+      self::assertSameValues([11], func::call_all(C2::class, $options));
+      self::assertSameValues([11, 21], func::call_all($c2, $options));
+      self::assertSameValues([111], func::call_all(C3::class, $options));
+      self::assertSameValues([111, 121], func::call_all($c3, $options));
+
+      $options = ["prefix" => "conf"];
+      self::assertSameValues([11], func::call_all(C1::class, $options));
+      self::assertSameValues([11, 21], func::call_all($c1, $options));
+      self::assertSameValues([11], func::call_all(C2::class, $options));
+      self::assertSameValues([11, 21], func::call_all($c2, $options));
+      self::assertSameValues([111], func::call_all(C3::class, $options));
+      self::assertSameValues([111, 121], func::call_all($c3, $options));
+
+      self::assertSameValues([11, 12], func::call_all($c1, ["include" => "x"]));
+      self::assertSameValues([11, 21], func::call_all($c1, ["include" => "y"]));
+      self::assertSameValues([11, 12, 21], func::call_all($c1, ["include" => ["x", "y"]]));
+
+      self::assertSameValues([21, 22], func::call_all($c1, ["exclude" => "x"]));
+      self::assertSameValues([12, 22], func::call_all($c1, ["exclude" => "y"]));
+      self::assertSameValues([22], func::call_all($c1, ["exclude" => ["x", "y"]]));
+
+      self::assertSameValues([12], func::call_all($c1, ["include" => "x", "exclude" => "y"]));
+    }
+
+    function testCons() {
+      $obj1 = func::cons(WoCons::class, 1, 2, 3);
+      self::assertInstanceOf(WoCons::class, $obj1);
+
+      $obj2 = func::cons(WithEmptyCons::class, 1, 2, 3);
+      self::assertInstanceOf(WithEmptyCons::class, $obj2);
+
+      $obj3 = func::cons(WithCons::class, 1, 2, 3);
+      self::assertInstanceOf(WithCons::class, $obj3);
+      self::assertSame(1, $obj3->first);
+    }
+  }
+
+  class WoCons {
+  }
+  class WithEmptyCons {
+    function __construct() {
+    }
+  }
+  class WithCons {
+    public $first;
+    function __construct($first) {
+      $this->first = $first;
+    }
+  }
+
+  class TC {
+    static function method() {
+      return 12;
+    }
+  }
+
+  class C1 {
+    static function confps1_xy() {
+      return 11;
+    }
+    static function ps2_x() {
+      return 12;
+    }
+    function confp1_y() {
+      return 21;
+    }
+    function p2() {
+      return 22;
+    }
+  }
+  class C2 extends C1 {
+    static function ps3() {
+      return 13;
+    }
+    function p3() {
+      return 23;
+    }
+  }
+  class C3 extends C2 {
+    static function confps1_xy() {
+      return 111;
+    }
+    function confp1_y() {
+      return 121;
+    }
+  }
+}