php array_sum函数统计数组和值 php数组求和

今天手机突然停机了,端午节从家里过来的时候还有20多块钱的,也没怎么打电话,就被联通给欠费了.遂上网查话费清单,竟然没有统计项目,于是自己就用php array_sum函数统计了下话费合计,果然是扣光了.郁闷.
数组如下:

array(43) {
  [0]=>
  string(6) "0.00
"
  [1]=>
  string(6) "0.00
"
  [2]=>
  string(6) "0.00
"
  [3]=>
  string(6) "0.00
"
  [4]=>
  string(6) "0.50
"
  [5]=>
  string(6) "0.75
"
  [6]=>
  string(6) "0.00
"
  [7]=>
  string(6) "0.00
"
  [8]=>
  string(6) "0.50
"
  [9]=>
  string(6) "2.25
"
  [10]=>
  string(6) "0.00
"
  [11]=>
  string(6) "0.50
"
  [12]=>
  string(6) "1.25
"
  [13]=>
  string(6) "1.00
"
  [14]=>
  string(6) "0.00
"
  [15]=>
  string(6) "0.00
"
  [16]=>
  string(6) "0.00
"
  [17]=>
  string(6) "0.00
"
  [18]=>
  string(6) "0.25
"
  [19]=>
  string(6) "0.25
"
  [20]=>
  string(6) "0.25
"
  [21]=>
  string(6) "0.00
"
  [22]=>
  string(6) "0.00
"
  [23]=>
  string(6) "0.00
"
  [24]=>
  string(6) "2.25
"
  [25]=>
  string(6) "0.00
"
  [26]=>
  string(6) "1.00
"
  [27]=>
  string(6) "0.00
"
  [28]=>
  string(6) "0.00
"
  [29]=>
  string(6) "0.50
"
  [30]=>
  string(6) "0.50
"
  [31]=>
  string(6) "0.00
"
  [32]=>
  string(6) "0.25
"
  [33]=>
  string(6) "0.00
"
  [34]=>
  string(6) "0.00
"
  [35]=>
  string(6) "0.60
"
  [36]=>
  string(6) "0.60
"
  [37]=>
  string(6) "0.00
"
  [38]=>
  string(6) "0.75
"
  [39]=>
  string(6) "0.00
"
  [40]=>
  string(6) "0.00
"
  [41]=>
  string(6) "0.00
"
  [42]=>
  string(4) "0.00"
}

从excel里复制来的一个字符串,然后切分的数组.
数字名 $total ; echo array_sum($total); 算出来了.
php函数还是挺多的,手册要经常啃啊.