将属性传递给下一个方法 - Passing property to next method

Passing property to next method

本文关键字：下一个方法属性 | 更新日期: 2023-09-27

我的类中有以下代码

class Mail {
    function AddAttachment($path, $name = '', $filetype = 'application/octet-stream') {
        if (!@is_file($path)){
            echo'<pre>Filepath was not found.</pre>';
        }
        if (empty($name)) {
            echo 'no filename';
        }
        //store attachment in array
        if(!isset($attachments)) {
            $attachments = array();
        }
        $attachments[] = array('path' => $path,'name' => $name,'type' => $filetype);
        //echo '<pre>';print_r($attachment);
        return  $attachments;
    }
    function SetMail() {
        foreach ($this->$attachments as $attachment) {
            echo '<pre>';print_r($attachment);
        }
    }
}
$mail = new Mail;
$mail->AddAttachment('../images/logo.png','filename');
$mail->AddAttachment('../images/logo.png','filensame');
$mail->SetMail();

正如你所看到的，我首先为附件创建了数组(addAttachment(，这很好。尽管我似乎无法在下一个方法中使用此数组。

我试图公开$attachments属性，但我仍然收到以下错误消息：

(没有公共(：无法访问空属性

(带public(：无法访问空属性

(使用self::$attachments而不是$this::$attachments时(：访问未声明的静态属性：

有人能解释我如何将$attachments属性传递给SetMail方法吗？

谢谢大家准备好了！

不需要将attachments发送到SetMail方法。它必须自动完成。必须在类内声明attachments变量。当你想访问它时，你必须这样做带$this->attachments:

<?php
class Mail {
    private $attachments = array();
    function AddAttachment($path, $name = '', $filetype = 'application/octet-stream') {
        $this->attachments[] = array('path' => $path,'name' => $name,'type' => $filetype);
        return  $this->attachments;
    }
    function SetMail()  {
        foreach ($this->attachments as $attachment) {
            echo '<pre>';
            print_r($attachment);
            echo '</pre>';
        }
    }
}
$mail = new Mail;
$mail->AddAttachment('../images/logo.png','filename1');
$mail->AddAttachment('../images/logo.png','filename2');
$mail->SetMail();
?>

每次调用AddAttachment 时都会声明一个新的$attachments变量

class Mail
{
    private $attachments=array();
    function AddAttachment($path, $name = '', $filetype = 'application/octet-stream')
    {
        if (!@is_file($path)){
            echo'<pre>Filepath was not found.</pre>';
        }
        if (empty($name))
        {
            echo 'no filename';
        }
        $att= array('path' => $path,'name' => $name,'type' => $filetype);
        $this->attachments[]=$att;
        return  $att;
    }
    function SetMail() 
    {
        foreach ($this->$attachments as $attachment)
        {
            echo '<pre>';print_r($attachment);
        }
    }
}