value//创建数组$userName = array('lily','milly','amy');print_r($userName);echo '
';$userName1 = array('li'=>'lily','milly','amy');print_r($userName1);echo '
';$userName2 = array('sister'=>'lily','brother'=>'milly','friend'=>'amy');print_r($userName2);echo '
';//访问数组echo $userName2['sister'];echo '
';//追加元素$userAge = array('lily'=>12);print_r($userAge);echo '
';$userAge['mac']=23;$userAge['pity']=33;print_r($userAge);echo '
';//直接创建数组，不通过array$userFrom['lily'] = 'wuhan';$userFrom['mac'] = 'haungshi';$userFrom['pit'] = 'shanghai';print_r($userFrom);echo '
';if(is_array($userFrom)){	echo 'userFrom is array';}else{	echo 'userFrom is not array';}echo '
';//问题：不能通过for循环访问元素//只能通过foreach（）遍历数组元素foreach($userFrom as $value){	echo $value;	echo '
';}foreach($userFrom as $key => $value){	echo $key.'---comes from---'.$value;	echo '
';}?>