Fix usuarios module: resolve PHP 8 warnings and fatal errors

- Fixed undefined array key warnings in usuarios-agregar.php
- Fixed undefined variable warnings (, , )
- Fixed null array offset warnings in db.class.php GetSingle()
- Added default parameter to ValidateMail() in util.class.php
- Fixed PrintErrors() return value for proper error handling
- Fixed integer constraint errors for codigoPostal and sucursalId
- Added missing identificacion and comprobante fields to INSERT query
- Fixed undefined  variable in IsEmailTaked()

classes/usuario.class.php

@@ -117,7 +117,7 @@ class Usuario extends Main
 	public function setCodigoPostal($value)
 	{
 		$this->Util()->ValidateString($value, $max_chars=50, $minChars = 0, "Codigo Postal");
-		$this->codigoPostal = $value;
+		$this->codigoPostal = empty($value) ? 0 : $value;
 	}
 		  
 	public function setTelefono($value)
@@ -156,10 +156,10 @@ class Usuario extends Main
 		$this->tipo = $value;
 	}
         
-    public function setSucursalId($value)
+	public function setSucursalId($value)
 	{
 		$this->Util()->ValidateString($value, $max_chars=300, $minChars = 0, 'Sucursal');
-		$this->sucursalId = $value;
+		$this->sucursalId = empty($value) ? 0 : $value;
 	}
         
     public function setEmail($value)
@@ -227,40 +227,45 @@ class Usuario extends Main
 		
 	public function Save()
 	{
-		if($this->Util()->PrintErrors()){ 
-			return false; 		
+		if($this->Util()->PrintErrors()){
+			return false;
 		}
-		
+
+		$identificacion = isset($this->identificacion) ? $this->identificacion : '';
+		$comprobante = isset($this->comprobante) ? $this->comprobante : '';
+
 		$db = new DB(true);
 		$db->setQuery("
-			INSERT INTO usuario ( 
+			INSERT INTO usuario (
 				empresaId,
 				nombre,
-				apellidos,				
+				apellidos,
 				calle,
-				noInt, 
-				noExt, 
-				referencia, 
-				colonia, 
-				localidad, 
-				municipio, 
+				noInt,
+				noExt,
+				referencia,
+				colonia,
+				localidad,
+				municipio,
 				estado,
-				pais, 
+				pais,
 				codigoPostal,
 				telefono,
 				celular,
 				noImss,
 				curp,
 				rfc,
-				email, 
-				password, 
+				identificacion,
+				comprobante,
+				email,
+				password,
 				`type`,
-                sucursalId
-			) 
+				sucursalId
+			)
 			VALUES (
 				'".$_SESSION["empresaId"]."',
 				'".$this->nombre."',
-				'".$this->apellidos."',				
+				'".$this->apellidos."',
 				'".$this->calle."',
 				'".$this->noInt."',
 				'".$this->noExt."',
@@ -276,11 +281,12 @@ class Usuario extends Main
 				'".$this->noImss."',
 				'".$this->curp."',
 				'".$this->rfc."',
+				'".$identificacion."',
+				'".$comprobante."',
 				'".$this->email."',
 				'".$this->passwd."',
 				'".$this->tipo."',
-                '".$this->sucursalId."')"
-			);		
+				'".$this->sucursalId."')");		
 		$usuarioId = $db->InsertData();
 		
 		$this->Util()->setError(20017, "complete");
@@ -494,10 +500,12 @@ class Usuario extends Main
 	}
 	
 	function IsEmailTaked(){
-		
+
+		$sqlAdd = '';
+
 		if($this->usuarioId)
 			$sqlAdd = ' AND usuarioId <> "'.$this->usuarioId.'"';
-		
+
 		$sql = 'SELECT usuarioId FROM usuario
 				WHERE email = "'.$this->email.'"
 				'.$sqlAdd.'