在php中，二维数组中的行数和列数？

问题描述：

I have a two dimensional array with unknown number of elements.

$two_darray[row][column]; //there will be an unknown integer values instead of row and column keywords

If I were to write a for loop as follows, how can I determine how many rows and columns in my $two_darray. Can you please tell me if there is a library function in php that can tell me the value inside [????] [????]

for($row=0; $row<………; $row++)
{
    for($column =0; $column  <………; $ column ++)
    {
        echo $two_darray[$row][$column];
    }
    echo “
 end of one column 
”;
}

I really need to know the value of rows and columns in order to perform other calculations.

我有一个二维数组，元素数量未知。 p>

$ two_darray [行] [列]; //将有一个未知的整数值而不是行和列关键字 code> p>

如果我要为 code>循环编写，如下所示，怎么能我确定 $ two_darray code>中有多少行和列。你可以告诉我，如果php中有一个库函数可以告诉我[????] [????] p>

 里面的值（$ row  = 0; $ row＆lt; .........; $ row ++）
 {
 for（$ column = 0; $ column＆lt; .........; $ column ++）
 {
 echo $ two_darray [$ row]  [$ column]; 
} 
 echo“
一列的结尾
”; 
} 
  code>  pre> 
 
 我真的需要知道 行和列以执行其他计算。 p> 
  div>

答

foreach ($two_darray as $key => $row) {
   foreach ($row as $key2 => $val) {
      ...
   }
}

No need to worry about how many elements are in each array, as foreach() will take care of it for you. If you absolutely refuse to use foreach, then just count() each array as it comes up.

$rows = count($two_d_array);
for ($row = 0; $row < $rows; $row++) {
     $cols = count($two_darray[$row]);
     for($col = 0; $col < $cols; $col++ ) {
        ...
     }
}

答

If you need to know an actual number, then you can use the sizeof() or count() functions to determine the size of each array element.

$rows = count($two_darray) // This will get you the number of rows

foreach ($two_darray as $row => $column)
{
    $cols = count($row);
}

答

For a php Multidimensional Array, Use

$rowSize = count( $arrayName );
$columnSize = max( array_map('count', $arrayName) );

答

This is what i do: My superheroes' array:

$superArray[0][0] = "DeadPool";
$superArray[1][0] = "Spiderman";
$superArray[1][1] = "Ironman";
$superArray[1][2] = "Wolverine";
$superArray[1][3] = "Batman";

Get size :

echo count( $superArray ); // Print out Number of rows = 2
echo count( $superArray[0] ); // Print Number of columns in $superArray[0] = 1
echo count( $superArray[1] ); // Print Number of columns in $superArray[1] = 4

php

答

the quick way for normal,non-mixed 2-dim Array,

$Rows=count($array); $colomns=(count($array,1)-count($array))/count($array);

在php中，二维数组中的行数和列数？

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