php学习随笔－php数组遍历方法2

最普遍的方法，foreach

适用数组：任何数组

foreach ($arr as $key=>$value){
    echo $key."=>".$value." ";
}

或者

$arr=array("a"=>"alert",
"b"=>"body",
"c"=>"clear"
);
foreach ($arr as  $value){
    echo $value." ";
}