php如何获取数组

$fruits = array("apple", "banana", "cherry");

echo $fruits[0];

foreach ($fruits as $fruit) {    echo $fruit . "<br>";}

applebananacherry

echo count($fruits);

$age = array("Peter"=>35, "Ben"=>37, "Joe"=>43);

echo $age["Ben"];

foreach ($age as $key=>$value) {    echo $key . " is " . $value . " years old<br>";}

Peter is 35 years oldBen is 37 years oldJoe is 43 years old

$cars = array(    array("Volvo",22,18),    array("BMW",15,13),    array("Saab",5,2),    array("Land Rover",17,15));

echo $cars[1][2];

for ($row = 0; $row < count($cars); $row++) {    echo "<p><b>Row number $row</b></p>";    echo "<ul>";    for ($col = 0; $col < count($cars[$row]); $col++) {        echo "<li>".$cars[$row][$col]."</li>";    }    echo "</ul>";}

Row number 0- Volvo- 22- 18Row number 1- BMW- 15- 13Row number 2- Saab- 5- 2Row number 3- Land Rover- 17- 15