如何迭代这个php数组

Foreach让我们在关联数组上迭代。

$alluploads = array(':attachment2' => "attachment2");
foreach($alluploads as $key => $value){
    echo "key: " . $key . " Has value: ". $value ."\n";
}

https://3v4l.org/uPBug

下面是一个for循环的示例,该循环使用array\u键获取关联数组键,并在循环中使用该键。

$alluploads = array(':attachment2' => "attachment2");
$keys = array_keys($alluploads);
for($i=0;$i<count($keys);$i++){
    echo "key: " . $keys[$i] . " Has value: ". $alluploads[$keys[$i]] ."\n";
}

https://3v4l.org/45fnM

第三个示例是,可以使用array\u值删除关联键。
只有当您知道数组中的所有值都是上载的,并且应该以相同的方式处理时,才应该使用此方法。

$alluploads = array(':attachment2' => "attachment2");
$alluploads = array_values($alluploads);
for($i=0;$i<count($alluploads);$i++){
    echo "key: " . $i . " Has value: ". $alluploads[$i] ."\n";
}

https://3v4l.org/IrDrv

您可以使用 foreach 循环,这样就不需要计数,如下所示:

foreach ($attachment2 as $a){
    $insertAttachments->execute( array(':attachment2' => $a['some index with the file path']) );
}

不要忘记更改数组的索引