diff --git a/php/src/db/CapacitorStorage.php b/php/src/db/CapacitorStorage.php
index c5cf345..1f6c759 100644
--- a/php/src/db/CapacitorStorage.php
+++ b/php/src/db/CapacitorStorage.php
@@ -276,7 +276,7 @@ EOT;
       $pvalues = $this->unserialize($channel, $prow);
     }
 
-    $updates = $initFunc->prependArgs(null, [$item, $values, $pvalues])->invoke();
+    $updates = $initFunc->prependArgs([$item, $values, $pvalues])->invoke();
     if ($updates === [false]) return 0;
     if (is_array($updates) && $updates) {
       if ($insert === null) $insert = false;
@@ -289,7 +289,7 @@ EOT;
 
     if ($func !== null) {
       $updates = func::with($func)
-        ->prependArgs(null, [$item, $values, $pvalues])
+        ->prependArgs([$item, $values, $pvalues])
         ->bind($channel, true)
         ->invoke();
       if ($updates === [false]) return 0;
diff --git a/php/src/file/tab/AbstractBuilder.php b/php/src/file/tab/AbstractBuilder.php
index 23ab27a..2affcc8 100644
--- a/php/src/file/tab/AbstractBuilder.php
+++ b/php/src/file/tab/AbstractBuilder.php
@@ -81,7 +81,7 @@ abstract class AbstractBuilder extends TempStream implements IBuilder {
 
   protected function cookRow(?array $row): ?array {
     if ($this->cookFunc !== null) {
-      $row = $this->cookFunc->prependArgs(null, [$row])->invoke();
+      $row = $this->cookFunc->prependArgs([$row])->invoke();
     }
     if ($row !== null) {
       foreach ($row as &$col) {
diff --git a/php/src/php/func.php b/php/src/php/func.php
index d81b416..79e9c78 100644
--- a/php/src/php/func.php
+++ b/php/src/php/func.php
@@ -597,14 +597,14 @@ class func {
     return $this;
   }
 
-  function prependArgs(?int $stripCount=null, ?array $args=null): self {
+  function prependArgs(?array $args, ?int $stripCount=null): self {
     if ($stripCount !== null || $args !== null) {
       array_splice($this->prefixArgs, 0, $stripCount ?? 0, $args);
     }
     return $this;
   }
 
-  function appendArgs(?int $stripCount=null, ?array $args=null): self {
+  function appendArgs(?array $args, ?int $stripCount=null): self {
     if ($stripCount !== null || $args !== null) {
       $stripCount ??= 0;
       if ($stripCount > 0) array_splice($this->prefixArgs, -$stripCount);
diff --git a/php/tests/php/funcTest.php b/php/tests/php/funcTest.php
index 0f5200b..45a0581 100644
--- a/php/tests/php/funcTest.php
+++ b/php/tests/php/funcTest.php
@@ -1103,8 +1103,10 @@ namespace nulib\php {
 
     function testRebind() {
       $func = func::with([C1::class, "tmethod"]);
+      // objets du même type
       self::assertSame(11, $func->bind(new C1(0))->invoke());
       self::assertSame(12, $func->bind(new C1(1))->invoke());
+      // objets de type différent
       self::assertException(ValueException::class, function() use ($func) {
         $func->bind(new C0())->invoke();
       });
@@ -1116,19 +1118,19 @@ namespace nulib\php {
 
       self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->replaceArgs(["x", "y", "z"])->invoke());
 
-      self::assertSame(["x", "y", "z", "a", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(null, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z", "a", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(0, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(1, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(2, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->prependArgs(3, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->prependArgs(4, ["x", "y", "z"])->invoke());
+      self::assertSame(["x", "y", "z", "a", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"])->invoke());
+      self::assertSame(["x", "y", "z", "a", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"], 0)->invoke());
+      self::assertSame(["x", "y", "z", "b", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"], 1)->invoke());
+      self::assertSame(["x", "y", "z", "c"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"], 2)->invoke());
+      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"], 3)->invoke());
+      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->prependArgs(["x", "y", "z"], 4)->invoke());
 
-      self::assertSame(["a", "b", "c", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(null, ["x", "y", "z"])->invoke());
-      self::assertSame(["a", "b", "c", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(0, ["x", "y", "z"])->invoke());
-      self::assertSame(["a", "b", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(1, ["x", "y", "z"])->invoke());
-      self::assertSame(["a", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(2, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(3, ["x", "y", "z"])->invoke());
-      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(4, ["x", "y", "z"])->invoke());
+      self::assertSame(["a", "b", "c", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"])->invoke());
+      self::assertSame(["a", "b", "c", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"], 0)->invoke());
+      self::assertSame(["a", "b", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"], 1)->invoke());
+      self::assertSame(["a", "x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"], 2)->invoke());
+      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"], 3)->invoke());
+      self::assertSame(["x", "y", "z"], func::with($closure, ["a", "b", "c"])->appendArgs(["x", "y", "z"], 4)->invoke());
     }
   }
 }