column_crash.php

<?php

$cluster = Cassandra::cluster()->build();
$connectionFuture = $cluster->connectAsync();
$session = $connectionFuture->get();
$schema = $session->schema();
foreach ($schema->keyspaces() as $keyspace) {
    foreach ($keyspace->tables() as $table) {
        foreach ($table->columns() as $column)
        { $column->type(); }
    }
}