吴裕雄--天生自然 PHP开发学习：数组

<?php 
$cars=array("Volvo","BMW","Toyota"); 
echo "I like " . $cars[0] . ", " . $cars[1] . " and " . $cars[2] . "."; 
?> 

<?php 
$cars=array("Volvo","BMW","Toyota"); 
echo count($cars); 
?> 

<?php 
$cars=array("Volvo","BMW","Toyota"); 
$arrlength=count($cars); 

for($x=0;$x<$arrlength;$x++) 
{ 
    echo $cars[$x]; 
    echo "<br>"; 
} 
?> 

<?php 
$age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43"); 
echo "Peter is " . $age['Peter'] . " years old."; 
?> 

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

foreach($age as $x=>$x_value) 
{ 
    echo "Key=" . $x . ", Value=" . $x_value; 
    echo "<br>"; 
} 
?>