is_writable()定義:
函數判斷指定的檔案是否可寫入。
語法:
is_writable($filename);
參數清單:
。規定要檢查的文件。 實例:
1 2 3 4 5 6 7 8 9 10 | <code><span><span> class </span><span>test</span>{</span><span> public </span><span><span> function </span><span>hello</span><span>(<span> $filename </span>)</span>{</span><span> if </span>( is_writable (<span> $filename </span>)){
<span> echo </span><span> "$filename is writeable" </span>;
}<span> else </span>{
<span> echo </span><span> "$filename is not writeable" </span>;
}
}
}
<span> $T </span>=<span> new </span> test();
<span> $T </span>->hello(<span> "F:file.txt" </span>);</code>
|
登入後複製
1 2 3 | <code> 输出结果:
F:<span>file</span>.txt <span>is</span> writeable </code>
|
登入後複製
以上就介紹了php is_writable函數,包含了面向的內容,希望對PHP教學有興趣的朋友有幫助。
參數 | |
|
版權聲明:本文為部落客原創文章,未經部落客允許不得轉載。 |