如何打印這種類型的數組？

Question

Array 
(
    [0] => Array 
     (
      [0] => 1 
     ) 

    [1] => Array 
     (
      [0] => 2 
     ) 

    [2] => Array 
     (
      [0] => 3 
     ) 

    [3] => 

    [4] => 

    [5] => 

    [6] => 

    [7] => 

    [8] => 

    [9] => 

    [10] => 

    [11] => 

    [12] => 

    [13] => 

    [14] => 
) 

如何使用的foreach打印上述陣列我試圖用的foreach是這樣的：

$i = 0; 

foreach($array as $arr) 

{ 

    echo $arr[$i]; 

    $i++; 

} 

但結果是empty.Please幫我解決這個問題。

Answer 1

您可以使用print_r()，var_dump()或使用foreach()進行打印 - 但您做錯了！

print_r($array); //will print the whole array 

var_dump($array); //will print the whole array plus variable type and length 

foreach($array as $arr){ 
    //$arr is the array VALUE! 
    if(!is_array($arr)) echo $arr; 
     else echo $arr[0]; 
} 

Answer 2

嘗試此

foreach ($array as $key => $value) { 
    if (is_array($value) && count($value) > 0) { 
     foreach ($value as $key1 => $val1) { 
      echo $val1; 
     } 
    } else { 
     echo $value; 
    } 
} 

Answer 3

如果該值本身（可能未知長度的）的陣列則需要通過它也進行迭代。

foreach($array as $index => $val){ 
    if(is_array($val)){ 
     foreach($val as $i => $arr) echo $arr; 
    } else { 
     echo $val; 
    } 
} 

Answer 4

foreach($array as $arr){ 
    print_r($arr); 
} 

Answer 5

function print_array($array){ 
    foreach ($array as $value){ 
     if (is_array($value)){ 
      print_array($value); 
     } 
     else{ 
      echo $value; 
     } 
    } 
} 

$array = array('a', 'b', array('c', 'd')); 

print_array($array); 

Answer 6

如果你不知道覆瓦狀排列的號碼，最好的辦法是遞歸性：

function print_table($table){ 
    foreach ($table as $key => $value) { 
     if (is_array($value)) { 
      print_table($value); 
     } else { 
      echo "<p> $key -> $value </p>"; 
     } 
    } 
} 

爲例

$fruits = array (
    "fruits" => array("a" => "orange", "b" => array("a" => "orange", "b" => "banana", "c" => "apple"), "c" => "apple"), 
    "numbers" => array(1, 2, 3, 4, 5, 6), 
    "holes" => array("first", 5 => "second", "third") 
); 

print_table($fruits);