Problème ctype_digit qui ne marche pas sur des variables qui sont déjà des entiers

app/Models/Configuration.php

@@ -220,19 +220,13 @@ class FreshRSS_Configuration extends Minz_Model {
 	public function _sortOrder ($value) {
 		$this->sort_order = $value === 'ASC' ? 'ASC' : 'DESC';
 	}
-	public function _oldEntries ($value) {
-		if (ctype_digit ($value) && $value > 0) {
-			$this->old_entries = intval($value);
-		} else {
-			$this->old_entries = 3;
-		}
+	public function _oldEntries($value) {
+		$value = intval($value);
+		$this->old_entries = $value > 0 ? $value : 3;
 	}
 	public function _keepHistoryDefault($value) {
-		if (ctype_digit($value) && $value >= -1) {
-			$this->keep_history_default = intval($value);
-		} else {
-			$this->keep_history_default = 0;
-		}
+		$value = intval($value);
+		$this->keep_history_default = $value >= -1 ? $value : 0;
 	}
 	public function _shortcuts ($values) {
 		foreach ($values as $key => $value) {

app/Models/Entry.php

@@ -106,11 +106,8 @@ class FreshRSS_Entry extends Minz_Model {
 		$this->link = $value;
 	}
 	public function _date ($value) {
-		if (ctype_digit ($value)) {
-			$this->date = intval ($value);
-		} else {
-			$this->date = time ();
-		}
+		$value = intval($value);
+		$this->date = $value > 1 ? $value : time();
 	}
 	public function _isRead ($value) {
 		$this->is_read = $value;

app/Models/Feed.php

@@ -154,7 +154,8 @@ class FreshRSS_Feed extends Minz_Model {
 		$this->lastUpdate = $value;
 	}
 	public function _priority ($value) {
-		$this->priority = ctype_digit ($value) ? intval ($value) : 10;
+		$value = intval($value);
+		$this->priority = $value >= 0 ? $value : 10;
 	}
 	public function _pathEntries ($value) {
 		$this->pathEntries = $value;
@@ -172,10 +173,10 @@ class FreshRSS_Feed extends Minz_Model {
 		$this->keep_history = $value;
 	}
 	public function _nbNotRead ($value) {
-		$this->nbNotRead = ctype_digit ($value) ? intval ($value) : -1;
+		$this->nbNotRead = intval($value);
 	}
 	public function _nbEntries ($value) {
-		$this->nbEntries = ctype_digit ($value) ? intval ($value) : -1;
+		$this->nbEntries = intval($value);
 	}
 
 	public function load () {