php多维数组获取问题,初学者
<code><br> $array = array(1,2,3,4,5); $array[0] = array(a,b,c,d,e,f,g); $array[1] = array(A,B,C,D,E,F,G); </code>
我想获取array(1,2,3,4,5); 这个一维数组里面的值是怎样获取的呢 ?
我是这样获取的 : $array[0]不过不行, 印象中好像java,c好像可以的吧。
php是初学者, 目前本屌正在极力从前端转后台;
回复内容:
<code><br> $array = array(1,2,3,4,5); $array[0] = array(a,b,c,d,e,f,g); $array[1] = array(A,B,C,D,E,F,G); </code>
我想获取array(1,2,3,4,5); 这个一维数组里面的值是怎样获取的呢 ?
我是这样获取的 : $array[0]不过不行, 印象中好像java,c好像可以的吧。
php是初学者, 目前本屌正在极力从前端转后台;
<code>var_dump($array); </code>
打出来看看就懂了
<code>php</code><code>$array = array(1,2,3,4,5); </code>
你这样赋值的时候,其实就相当于array(0=>1, 1=>2, 3=>4, 4=>5);
不指定key(或称为下标)时,自动会以0为初始并递增。
之后你给$array[0]赋值数组会变成
<code>php</code><code>array(0=>array(a,b,c,d,e,f,g), 1=>2, 3=>4, 4=>5); </code>
也就是说原来的1已经变成了数组,所以不能获取到array(1,2,3,4,5),因为原来的值已经被你改了。
你要遍历可以这样写:
<code>php</code><code>foreach($arr as $var) { print_r($var); } </code>

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