php数组变量不起作用

I am trying to get the following variable into an array which basically contains a list of numbers separated by spaces. When I attempt to apply basic array formulas that should work it makes each individual number into a separate array. How would I get all the numbers into one array?

Partial Code:

echo "<h2>Table:</h2>";
echo "<table border='1'><tr>";
// printing table headers
for($i = 0; $i < $fields_num; $i++) {
    $field = mysql_fetch_field($result);
    echo "<td><b>{$field->name}</b></td>";
}

echo "</tr>
";

// printing table rows
$rn = 0;
$projsum = 0;

while($row = mysql_fetch_row($result)) {
    $rn = $rn + 1;
    if($rn == 1) {
        $presproj = $row[0];
        $projrow = 1;
    }
    if($row[0] != $rowm1[0]) { // if present row col 1 differs from Previous  
        $col = 0;
        echo "<tr>";
        foreach($rowm1 as $cell) {
            $col = $col + 1;
            if($col == 1) {
                echo "<td><small>Total</small></td>";
            } elseif($col < count($rowm1)) {
                echo "<td><small></small></td>";

            } else {
                echo "<td><small>";
                echo $projsum;
                echo "</small></td>";
                $projsum = 0;

            }
            $projrow = 1;

        }
        echo "</tr>
";

    }

    echo "<tr>";
    // $row is array... foreach( .. ) puts every element
    // of $row to $cell variable
    $it = 0;
    foreach($row as $cell) {
        $it = $it + 1;
        if(($it == 1) && ($projrow != 1)) {
            echo "<td><small></small></td>";
        } else {
            echo "<td><small>" . $cell . "</small></td>";
        }
    }
    echo "</tr>
";

    $rowm1 = $row;
    $projrow = $projrow + 1;
    $projsum = $projsum + $row[count($row) - 1];
    $sample .= End(end($row));
    echo $sample;

}

mysql_free_result($result);

Variable:

$projsum=$projsum + $row[count($row)-1];

Using explode to make an array creates the following: $projsum_array = explode(" ", $projsum);

Array ( [0] => 62.92 ) Array ( [0] => 212.92 ) Array ( [0] => 238 ) Array ( [0] => 1 ) Array ( [0] => 151.58 ) Array ( [0] => 184.16 ) Array ( [0] => 713.99 ) Array ( [0] => 859.07 ) Array ( [0] => 864.32 ) Array ( [0] => 866.32 ) Array ( [0] => 897.57 ) Array ( [0] => 921.15 ) Array ( [0] => 924.15 ) Array ( [0] => 927.48 ) Array ( [0] => 944.15 ) Array ( [0] => 11 ) Array ( [0] => 50.83 )

If you want to split your string into an array you can use explode().

Check the documentation about this.

$projsum_array = explode(" ", $projsum);

Seems to me as what you are looking for is this:

$projsum .=  End($row);

Notice the .= means keep projsum and add.
And end() will get the last item in the array.

Edit: if it's the 50.83 from your array you are trying to get then it's one level lower in the array so you need to use

$projsum .=  End(end($row));

It will throw an waening notice but you can suppress it with @ if you are sure the array does not change in structure.