三维数组for循环遍历

<?php

$product=array(array(array('CAR_TIR','Tires',100),array('CAR_OIL','Oil',10),array('CAR_SPARK','Spark plugs',4)),
array(array('VAN_TIR','Tires',120),array('$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;$column++){
echo '|'.$product[$layer][$row][$column];
}
echo '<br>';
}

}

?>