php判斷空字串

1. isset功能:判斷變數是否被初始化說明:它並不會判斷變數是否為空, ... 說明:值為0 或false 或空字串」」 或null的變數、空陣列、都將判斷為null



相關軟體 Folder Size 下載

Folder Size for Windows adds a new column to the Details view in Windows Explorer. The new column shows not only the size of files, but also the size of folders. It keeps track of which folders you vi...

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