diff --git a/composer.json b/composer.json
index c00697e..16afd74 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,8 @@
 		"nulib/tests": "^7.4",
 		"ext-posix": "*",
 		"ext-pcntl": "*",
-		"ext-curl": "*"
+		"ext-curl": "*",
+		"ext-sqlite3": "*"
 	},
 	"autoload": {
 		"psr-4": {
diff --git a/php/src/db/sqlite/_query_base.php b/php/src/db/sqlite/_query_base.php
index 9545077..84bd8ff 100644
--- a/php/src/db/sqlite/_query_base.php
+++ b/php/src/db/sqlite/_query_base.php
@@ -3,6 +3,7 @@ namespace nulib\db\sqlite;
 
 use nulib\db\_private\_base;
 use nulib\db\_private\Tbindings;
+use nulib\output\msg;
 use nulib\ValueException;
 use SQLite3;
 use SQLite3Stmt;
@@ -35,10 +36,10 @@ class _query_base extends _base {
     }
   }
 
-  const DEBUG_QUERIES = false;
+  const DEBUG_QUERIES = true;
 
   function useStmt(SQLite3 $db, ?SQLite3Stmt &$stmt=null, ?string &$sql=null): bool {
-    if (static::DEBUG_QUERIES) error_log($this->sql); #XXX
+    if (static::DEBUG_QUERIES) msg::info($this->sql); #XXX
     if ($this->bindings !== null) {
       /** @var SQLite3Stmt $stmt */
       $stmt = SqliteException::check($db, $db->prepare($this->sql));
diff --git a/php/src/php/time/DateTime.php b/php/src/php/time/DateTime.php
index 9238b97..4c050d8 100644
--- a/php/src/php/time/DateTime.php
+++ b/php/src/php/time/DateTime.php
@@ -4,6 +4,7 @@ namespace nulib\php\time;
 use DateTimeInterface;
 use DateTimeZone;
 use InvalidArgumentException;
+use nulib\php\func;
 
 /**
  * Class DateTime: une date et une heure
@@ -34,30 +35,98 @@ class DateTime extends \DateTime {
   const DMYHIS_PATTERN = '/^(\d+)\/(\d+)(?:\/(\d+))? +(\d+)[h:.](\d+)(?:[:.](\d+))?$/';
   const YMDHISZ_PATTERN = '/^((?:\d{2})?\d{2})(\d{2})(\d{2})[tT](\d{2})(\d{2})(\d{2})?([zZ])?$/';
 
+
+  protected static function get_value(array $datetime, ?string $key, ?string $k, ?int $index) {
+    $value = null;
+    if ($value === null && $key !== null) $value = $datetime[$key] ?? null;
+    if ($value === null && $k !== null) $value = $datetime[$k] ?? null;
+    if ($value === null && $index !== null) $value = $datetime[$index] ?? null;
+    return $value;
+  }
+
+  private static function parse_int(array $datetime, ?string $key, ?string $k, ?int $index, ?int &$part, bool $required=true, ?int $default=null): bool {
+    $part = null;
+    $value = self::get_value($datetime, $key, $k, $index);
+    if ($value === null) {
+      if ($required && $default === null) return false;
+      $part = $default;
+      return true;
+    }
+    if (is_numeric($value)) {
+      $part = intval($value);
+      return true;
+    }
+    return false;
+  }
+
+  private static function parse_str(array $datetime, ?string $key, ?string $k, ?int $index, ?string &$part, bool $required = true, ?string $default=null): bool {
+    $part = null;
+    $value = self::get_value($datetime, $key, $k, $index);
+    if ($value === null) {
+      if ($required && $default === null) return false;
+      $part = $default;
+      return true;
+    }
+    if (is_string($value)) {
+      $part = $value;
+      return true;
+    }
+    return false;
+  }
+
+  protected static function parse_array(array $datetime): ?array {
+    if (!self::parse_int($datetime, "year", "Y", 0, $year)) return null;
+    if (!self::parse_int($datetime, "month", "m", 1, $month)) return null;
+    if (!self::parse_int($datetime, "day", "d", 2, $day)) return null;
+    self::parse_int($datetime, "hour", "H", 3, $hour, false);
+    self::parse_int($datetime, "minute", "M", 4, $minute, false);
+    self::parse_int($datetime, "second", "S", 5, $second, false);
+    self::parse_str($datetime, "tz", null, 6, $tz, false);
+    return [$year, $month, $day, $hour, $minute, $second, $tz];
+  }
+
   static function isa($datetime): bool {
     if ($datetime === null) return false;
     if ($datetime instanceof DateTimeInterface) return true;
-    if (!is_int($datetime) && !is_string($datetime)) return false;
-    return preg_match(self::DMY_PATTERN, $datetime) ||
-      preg_match(self::YMD_PATTERN, $datetime) ||
-      preg_match(self::DMYHIS_PATTERN, $datetime) ||
-      preg_match(self::YMDHISZ_PATTERN, $datetime);
+    if (is_int($datetime)) return true;
+    if (is_string($datetime)) {
+      return preg_match(self::DMY_PATTERN, $datetime) ||
+        preg_match(self::YMD_PATTERN, $datetime) ||
+        preg_match(self::DMYHIS_PATTERN, $datetime) ||
+        preg_match(self::YMDHISZ_PATTERN, $datetime);
+    }
+    if (is_array($datetime)) {
+      return self::parse_array($datetime) !== null;
+    }
+    return false;
   }
 
   static function isa_datetime($datetime, bool $frOnly=false): bool {
     if ($datetime === null) return false;
     if ($datetime instanceof DateTimeInterface) return true;
-    if (!is_int($datetime) && !is_string($datetime)) return false;
-    return preg_match(self::DMYHIS_PATTERN, $datetime) ||
-      (!$frOnly && preg_match(self::YMDHISZ_PATTERN, $datetime));
+    if (is_int($datetime)) return true;
+    if (is_string($datetime)) {
+      return preg_match(self::DMYHIS_PATTERN, $datetime) ||
+        (!$frOnly && preg_match(self::YMDHISZ_PATTERN, $datetime));
+    }
+    if (is_array($datetime)) {
+      return self::parse_array($datetime) !== null;
+    }
+    return false;
   }
 
   static function isa_date($date, bool $frOnly=false): bool {
     if ($date === null) return false;
     if ($date instanceof DateTimeInterface) return true;
-    if (!is_int($date) && !is_string($date)) return false;
-    return preg_match(self::DMY_PATTERN, $date) ||
-      (!$frOnly && preg_match(self::YMD_PATTERN, $date));
+    if (is_int($date)) return true;
+    if (is_string($date)) {
+      return preg_match(self::DMY_PATTERN, $date) ||
+        (!$frOnly && preg_match(self::YMD_PATTERN, $date));
+    }
+    if (is_array($date)) {
+      return self::parse_array($date) !== null;
+    }
+    return false;
   }
 
   static function _YmdHMSZ_format(\DateTime $datetime): string {
@@ -148,9 +217,7 @@ class DateTime extends \DateTime {
     } elseif (is_int($datetime)) {
       parent::__construct("now", $timezone);
       $this->setTimestamp($datetime);
-    } elseif (!is_string($datetime)) {
-      throw new InvalidArgumentException("datetime must be a string or an instance of DateTimeInterface");
-    } else {
+    } elseif (is_string($datetime)) {
       $Y = $H = $Z = null;
       if (preg_match(self::DMY_PATTERN, $datetime, $ms)) {
         $Y = $ms[3] ?? null;
@@ -190,6 +257,18 @@ class DateTime extends \DateTime {
         if ($Z !== null) $timezone = new DateTimeZone("UTC");
       }
       parent::__construct($datetime, $timezone);
+    } elseif (is_array($datetime) && ($datetime = self::parse_array($datetime)) !== null) {
+      [$Y, $m, $d, $H, $M, $S, $tz] = $datetime;
+      if ($H === null && $M === null && $S === null) {
+        $datetime = sprintf("%04d-%02d-%02d", $Y, $m, $d);
+      } else {
+        $datetime = sprintf("%04d-%02d-%02d %02d:%02d:%02d", $Y, $m, $d, $H ?? 0, $M ?? 0, $S ?? 0);
+      }
+      if ($tz === "Z" || $tz === "z") $tz = "UTC";
+      $timezone = $tz !== null? new DateTimeZone($tz): null;
+      parent::__construct($datetime, $timezone);
+    } else {
+      throw new InvalidArgumentException("datetime must be a string or an instance of DateTimeInterface");
     }
   }