count统计数组里元素的个数； strlen是统计数组中元素的长度；
你如果想统计数组中所有元素的长度，那就用循环统计吧tqeb
代码: $a = array('0' => '123', '1' => 'asdf');
$count = count($a);
$a_length = 0;
for ($i=0; $i<$count; $i++) { $a_length = $a_length + strlen($a[$i]); } print $a_length;
代码: <?phptqeb $a[0] = 1; $a[1] = 3; $a[2] = 5; $result = count($a); // $result == 3
$b[0] = 7; $b[5] = 9; $b[10] = 11; $result = count($b); // $result == 3;
$result = count(null); // $result == 0
$result = count(false); // $result == 1 ?>