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我已經看了這個代碼超過一個小時,它看起來對我來說很好。但是,當我使用insertSubmit()函數時,description變量正在丟失範圍。該變量在構造期間設置,但不是在使用insertSubmit()時設置。我在這裏錯過了什麼嗎?奇怪的行爲與類級變量
<?php session_start();
class SubmitNew {
var $title = "";
var $category = "";
var $summary = "";
var $description = "";
var $username = "";
var $timestamp = "";
var $errors = "";
var $errorStr = "";
var $link = "";
var $db = "";
public function __construct() {
$this->setVariables();
$this->errors = 0;
$this->p_id = 1;
}
public function setVariables() {
$this->title = "1";
$this->category = "2";
$this->summary = "3";
$this->description = "4";
echo $this->description;
$this->timestamp = mktime(date("G"), date("i"),
date("s"), date("m") , date("d"), date("Y"));
}
public function errorBlank() {
if($this->title == null) {
$this->errorStr = $this->errorStr."blanktitle";
$this->errors++;
} if($this->summary == null) {
$this->erroStr = $this->errorStr."blanksummary";
$this->errors++;
} if($this->description = null) {
$this->erroStr = $this->errorStr."blankdescription";
$this->errors++;
}
}
public function errorAll() {
if($this->errors == 0) {
return "success";
} else {
return $this->errorStr;
}
}
public function insertSubmit() {
echo $this->description;
}
}
請說明你是如何使用這個類的,因爲當我執行以下時,我會看到「4」echo'd兩次:'$ s = new SubmitNew(); $ s-> insertSubmit();' – 2013-03-03 13:55:03
我看到'$ this-> description = null',所以你給'$ this-> description'分配'null'。使用'==' – metadings 2013-03-03 13:58:53
metadings謝謝! – user2128903 2013-03-03 13:59:05