Php 仅从数组中选择特定值

我如何才能从该数组中仅获取具有cost\u measure==“Percent”的记录，然后仅迭代这些记录

这是我的阵列：

array (size=5)
  0 => 
    array (size=8)
      'cno' => string 'C-01' (length=4)
      'cost_name' => string 'Trošak prijevoz' (length=16)
      'cost_description' => string 'Trošak prijevoza od Husvarne do K+N' (length=36)
      'cost_type' => string 'Transport' (length=9)
      'cost_measure' => string 'Percent' (length=7)
      'cost_amount' => string '0.50' (length=4)
      'cost_vcfc' => string 'Fixed cost' (length=10)
      'custom_cost' => int 0
  1 => 
    array (size=8)
      'cno' => string 'C-02' (length=4)
      'cost_name' => string 'Carina' (length=6)
      'cost_description' => string 'Carina na robu koja se uvozi van EU' (length=35)
      'cost_type' => string 'Customs' (length=7)
      'cost_measure' => string 'Percent' (length=7)
      'cost_amount' => string '0.00' (length=4)
      'cost_vcfc' => string 'Fixed cost' (length=10)
      'custom_cost' => int 0
  2 => 
    array (size=8)
      'cno' => string 'C-03' (length=4)
      'cost_name' => string 'Banka' (length=5)
      'cost_description' => string 'Troškovi banke za obradu transakcija' (length=37)
      'cost_type' => string 'Bank' (length=4)
      'cost_measure' => string 'Percent' (length=7)
      'cost_amount' => string '0.15' (length=4)
      'cost_vcfc' => string 'Fixed cost' (length=10)
      'custom_cost' => int 0
  3 => 
    array (size=8)
      'cno' => string 'C-04' (length=4)
      'cost_name' => string 'PDV' (length=3)
      'cost_description' => string 'Trošak poreza za državu' (length=25)
      'cost_type' => string 'VAT' (length=3)
      'cost_measure' => string 'Percent' (length=7)
      'cost_amount' => string '25.00' (length=5)
      'cost_vcfc' => string 'Fixed cost' (length=10)
      'custom_cost' => int 0
  4 => 
    array (size=8)
      'cno' => string 'C-06' (length=4)
      'cost_name' => string 'Test cost' (length=9)
      'cost_description' => string 'This one is to test the change' (length=30)
      'cost_type' => string 'Main' (length=4)
      'cost_measure' => string 'Absolute' (length=8)
      'cost_amount' => string '120.00' (length=6)
      'cost_vcfc' => string 'Fixed' (length=5)
      'custom_cost' => int 1

在我获得cost_measure==“Percent”的记录之后，我需要将这些百分比添加到$number。例如：

$number + cost_amount 0.50 %
$number + cost_amount 0.15 %
$number + cost_amount 25 %

不确定需要什么（值或字符串）。请尝试以下操作：

 $arr=array()//your array...
  $number=0;$numberText="";
    foreach($arr as $key=>$value){
      if(strcmp($value["cost_measure"],"Percent") == 0){
        $number = $number+$value["cost_amount"];
       $numberText.="cost_amount ".$value["cost_amount"]." %<br>";
    }
    }
echo $number;//total percentage added.
echo $numberText;//string with all the percentages

$arr=array（）//您的数组。。。
$number=0$numberText=“”；
foreach（$arr作为$key=>$value）{
如果（strcmp（$value[“cost_measure”]，“Percent”）==0）{
$number=$number+$value[“成本金额”]；
$numberText.=“成本金额”。$value[“成本金额”]。“%
”；
}
}
echo$number//增加的总百分比。
echo$numberText//用所有百分比串起来

是否要像示例中那样显示字符串？好，这工作不正常。它加起来是120%，从数组中加起来应该是25%，0.50%和0.15%，每个单独如下：$number*0.50%，$number*0.15%和$number*25%不求和。好的，我知道问题出在哪里了。它不仅得到了百分比，还得到了所有的美元价值[“成本衡量”]。这就是它变得太大的原因。它也变得绝对了。if（strcmp（$value[“cost_measure”]，“Percent”）=0）有点问题{好的，我知道了。重新修改了你的代码，这正是我想要的！非常感谢你的帮助！