Question

php中怎样用foreach改变数组的值？

为什么这样的代码无法改变数组中的值呢？
$table_exchange=array(1,2,3,4,5,6,7,8);

foreach ($table_exchange as $b=>$c){

$c="Week_".$c;

}

echo $table_exchange[0];

Answer 1

$table_exchange=array(1,2,3,4,5,6,7,8);

foreach ($table_exchange as $b=>$c){

$table_exchange[$b]="Week_".$c;

}

echo $table_exchange[0];
这样试一试