PHP嵌套的foreach循环迭代并设置变量 [英] PHP nested foreach loop iterate and set variable

问题描述

我在php的嵌套foreach循环中遇到了变量问题:

I got a problem with my variable within a nested foreach loop in php:

内部循环完成后，我的变量$ counter没有重置为1.我也试图取消($ co 内循环之后)，这也没有任何作用.我知道php中的foreach循环没有内部作用域.但是我以为，一旦我在内循环完成后设置了$ counter = 1，那么下一个外循环以及新的内循环就应该再次以$ counter = 1开始?

My variable $counter doesn't reset to 1 after the inner loop is done. I also tried to unset($co unter) after the inner loop, which didn't have any effect either. I am aware that there is no inner scope in foreach loops in php. But I thought, once I set the $counter=1 after the inner loop is done, then the next outer loop and with it the new inner loop should start with $counter=1 again??

<?php
$counter = 1;
foreach($loop1 as $x){

     foreach($loop2 as $y){  
       if($counter==1){do something};

       else {do something else};           
       $counter++;
      };
 $counter = 1;

 }    

?>

这是实际的代码:

<?php
$i=1;
foreach ($neu as $n) {
    $gcount = 1;


    echo'<div> </div>';




    foreach ($gesendet as $g) {
        if (($n["Quelle"] ==$g["Quelle"]) || ($n["Quelle"] ==$g["Ziel"])){

                if ($gcount == 1){
                echo nl2br("\n");                   
            }

            else {
                echo'<div id="divtoggle">' .nl2br("\n")."at ".$g['Datum']." ".  htmlspecialchars($g['username']). nl2br(" wrote: \n") ;  
                echo "\"".htmlspecialchars($g['Inhalt']). "\"" .nl2br("\n");    
                echo '</div>';                  
            }
    }
    $gcount++;
    }
    unset($gcount);
    echo '</div>';          
     $i++;  
}

?>

推荐答案

尝试一下.

<?php
foreach($loop1 as $x){
    $counter = 1;
    foreach($loop2 as $y){  
        if($counter==1){do something};
        else {do something else};           
        $counter++;
    }
}    
?>

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