3 dimensional arrays with for loop

<?php
    $categories = array(array( array( ‘CAR_TIR’, ‘Tires’, 100 ),
                        array( ‘CAR_OIL’, ‘Oil’, 10 ),
                        array( ‘CAR_SPK’, ‘Spark Plugs’, 4 ) ),
                 array( array( ‘VAN_TIR’, ‘Tires’, 120 ),
                        array( ‘VAN_OIL’, ‘Oil’, 12 ),
                        array( ‘VAN_SPK’, ‘Spark Plugs’, 5 ) ),
                array( array( ‘TRK_TIR’, ‘Tires’, 150 ),
                        array( ‘TRK_OIL’, ‘Oil’, 15 ),
                        array( ‘TRK_SPK’, ‘Spark Plugs’, 6 ) )
                        );
    for ($layer =0;$layer <3; $layer++){
        echo “layer $layer<br/>”;
        for ($row =0; $row<3; $row++){
            for ($column =0; $column<3; $column++){
            echo ‘|’.$categories[$layer][$row][$column];
        
        }
            echo ‘|<br/>’;
        }
    
    }
    
    
    
    
?>

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