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二06

自己動手寫PHP MVC

管理者

這篇寫的很好

這邊做個備份

http://www.yuansir-web.com/2012/01/10/%E8%87%AA%E5%B7%B1%E5%8A%A8%E6%89%8B%E5%86%99php-mvc%E6%A1%86%E6%9E%B6%E4%B8%80/

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一06

[轉]javascript的 var x = y = 0; 和 var x = 0; var y = 0;的差別

管理者

上網查資料發現一個問題，以前都沒有想過的，把它貼出來做為紀錄。

如果在function裡面的話x是局部變量，y是全局變量

例如這樣：

function a（）{

var x=y=0；

}

因為是從左到右賦值的，相當於

function a（）{

var x=（y=0）；

}

y前面沒有var關鍵字，所以是全局變量，出乎意料的結果，y可能會命名衝突。。

所以一般這麼寫

function a（）{

var x=0，

y=0；

}

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十二29

寫PHP多出空白問題(UTF8)

管理者

寫網站發生了一個

會一直多出一個空白行的問題

最後發現是include時

該php文件雖然是UTF8

但是檔頭是有BOM的

存檔格視改為無BOM就解決了

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