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努力阵列——仅有一个指数的阵列(PHP)
原标题:String to array - array with only one index (PHP)

我有这样的说明:

$string = "123456789"

它应当成为一个阵列:

Array ( [0] => 123 ) Array ( [1] => 456 ) Array ( [2] => 789 )

但我收到:

Array ( [0] => 123 ) Array ( [0] => 456 ) Array ( [0] => 789 )

我利用假体来进行这种扼杀:

for ($i=0; $i<$num; $i++)
{
    $string = $tree[ a ][ b ][$i][ c ];
}

接下来,我利用探索功能获得一个阵列。 为什么我只拿一个指数——零——来看待这个阵列? 我应该做的是:

 Array ( [0] => 123 ) Array ( [1] => 456 ) Array ( [2] => 789 ).

请帮助我理解这一点。

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