dpi96151 2015-06-28 20:33
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在PHP中使用foreach循环的迭代多维关联数组

I want to search a particular record in a multidimensional associative array. It works fine when I search a record from the first array but it is not working properly when searching in the second array.

This is my code:

<?php
$year= array("January"=>array("Ben","Katty","Paul"),
"December"=>array("Ali","Adnan","Sajjad")
);
$match="Ali";
$notThere = True;

foreach ($year as $month => $person) {
    foreach ($person as $subjectName => $ID) {
        if($match==$ID){        
            echo "${ID}. borns on ${month}<br>";
            $notThere = false;
        }
    }
    if($notThere){
        echo "Not Found";
        $notThere=false;
    }   
}
?>

Not FoundAli. borns on December

Also, if you could explain how a nested foreach loop works.

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1条回答 默认 最新

  • dsbj66959 2015-06-28 20:39
    关注

    You need to move your If statement out of loops

    <?php
    $year= array("January"=>array("Ben","Katty","Paul"),
    "December"=>array("Ali","Adnan","Sajjad")
    );
    $match="Ali";
    $notThere = True;
    
    foreach ($year as $month => $person) {
        foreach ($person as $subjectName => $ID) {
            if($match==$ID){        
                echo "${ID}. borns on ${month}<br>";
                $notThere = false;
            }
        }
    }
    if($notThere){
        echo "Not Found";
        $notThere=false;
    }   
    ?>
    
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