检查数组多维数组包含值或不

Question

我多维数组

Array ( 
      [0] => Array ( 
         [questionID] => 47 
         [surveyID] => 51 
         [userID] => 31 
         [question_Title] => Choose Any One? 
         [question_Type] => Dropdown 
         [response] => 1.Android 2.Windows 3.Blackberry 
         [required] => 0 
         [add_time] => 0 
      ) 
      [1] => Array ( 
         [questionID] => 48 
         [surveyID] => 51 
         [userID] => 31 
         [question_Title] => Is it? 
         [question_Type] => Bigbox 
         [response] => Yes No 
         [required] => 1 
         [add_time] => 0 
      )  

     ) 

然后使用foreach循环我提交的每个值，将其插入MySQL数据库 但如果数组存在[required] => 1我不想提交的任何值

所以，如何检查天气整个阵列conatins [需要] => 1

Answer 1

似乎简单的足够foreach循环就可以了：

foreach($mainArray as $miniArray) 
{ 
    if($miniArray['required']==1) 
    { 
     // Do insert stuff here. 
    } 
} 

或者，如果你想检查是否你进入它之前的任何地方存在于数组中，一个简单的布尔应该做的伎俩：

$hasRequired=false; 
foreach($mainArray as $miniArray) 
{ 
    if($miniArray['required']==1) 
    { 
     $hasRequired=true; 
    } 
} 

if($hasRequired) 
{ 
    // Do Insert Stuff here. 
} 

Answer 2

您可以使用array_filter：

$test_array = array(
    array(
     "required"=>0, 
     "other_field"=>"value" 
    ), 
    array(
     "required"=>0, 
     "other_field"=>"value" 
    ), 
    array(
     "required"=>0, 
     "other_field"=>"value" 
    ), 
); 

function checkIfRequired($var) 
{ 
    return (is_array($var) && $var['required'] == 1); 
} 

if(sizeof(array_filter($test_array, "checkIfRequired"))){ 
    print 'required field exists'; 
} 
else{ 
    print 'required field does not exist'; 
} 

Answer 3

您可以使用is_array或in_array函数来检查数组的值。但is_array函数比in_array更快更准确。 这里是一个来自PHP手册的例子。这个函数将检查整个数组。

function myInArray($array, $value, $key){ 
//loop through the array 
foreach ($array as $val) { 
    //if $val is an array cal myInArray again with $val as array input 
    if(is_array($val)){ 
    if(myInArray($val,$value,$key)) 
     return true; 
    } 
    //else check if the given key has $value as value 
    else{ 
    if($array[$key]==$value) 
     return true; 
    } 
} 
return false; 

}