<?php

if (!empty($_POST)) {
    $found = AssistanceData::getByATD($_POST["alumn_id"], $_POST["team_id"], $_POST["date_at"]);
    if ($found == null && $_POST["kind_id"] != "") {
        $assis = new AssistanceData();
        $assis->alumn_id = $_POST["alumn_id"];
        $assis->team_id = $_POST["team_id"];
        $assis->kind_id = $_POST["kind_id"];
        $assis->date_at = $_POST["date_at"];
        $assis->add();
    } else {
        if ($found = !null && $_POST["kind_id"] != "") {
            $found = AssistanceData::getByATD($_POST["alumn_id"], $_POST["team_id"], $_POST["date_at"]);
            $found->kind_id = $_POST["kind_id"];
            $found->update();
        } else {
            if ($_POST["kind_id"] == "") {
                $found = AssistanceData::getByATD($_POST["alumn_id"], $_POST["team_id"], $_POST["date_at"]);
                $found->del();
            }
        }
    }
}
		<?php 
$alumns = AlumnTeamData::getAllByTeamId($_GET["team_id"]);
if (count($alumns) > 0) {
    // si hay usuarios
    ?>
			<table class="table table-bordered table-hover">
			<thead>
			<th>Nombre</th>
			<th>
			</th>
			</thead>
			<?php 
    foreach ($alumns as $al) {
        $alumn = $al->getAlumn();
        $asist = AssistanceData::getByATD($alumn->id, $_GET["team_id"], $_GET["date_at"]);
        $values = array("" => "Sin seleccion", "1" => "Asistencia", "2" => "Falta", "3" => "Retardo", "4" => "Justificacion");
        ?>
				<tr>
				<td style="width:250px;"><?php 
        echo $alumn->name . " " . $alumn->lastname;
        ?>
</td>
				<td >
				<form id="form-<?php 
        echo $al->id;
        ?>
">
				<input type="hidden" name="alumn_id" value="<?php 
        echo $alumn->id;
        ?>
">