Detailed explanation of deleting unlink() in php files

Remember the lesson from PHP file creation, we created a file called testFile.txt.

<span style="color: #800080">$myFile</span> = "testFile.txt"<span style="color: #000000">;
</span><span style="color: #800080">$fh</span> = <span style="color: #008080">fopen</span>(<span style="color: #800080">$myFile</span>, 'w') or <span style="color: #0000ff">die</span>("can't open file"<span style="color: #000000">);
</span><span style="color: #008080">fclose</span>(<span style="color: #800080">$fh</span><span style="color: #000000">);
判断是否删除了</span>. http:<span style="color: #008000">//</span><span style="color: #008000">www.manongjc.com/article/1351.html</span>
<span style="color: #800080">$myFile</span> = "testFile.txt"<span style="color: #000000">;
</span><span style="color: #008080">unlink</span>(<span style="color: #800080">$myFile</span>);

Example

<span style="color: #800080">$filename</span> = 'file.txt'<span style="color: #000000">;
</span><span style="color: #008080">fopen</span>(<span style="color: #800080">$filename</span>,'a+'<span style="color: #000000">);
</span><span style="color: #0000ff">if</span>(!<span style="color: #008080">unlink</span>(<span style="color: #800080">$filename</span><span style="color: #000000">))
{
</span><span style="color: #0000ff">echo</span> "文件{<span style="color: #800080">$filename</span>}删除失败"; <span style="color: #008000">//</span><span style="color: #008000">  http://www.manongjc.com/article/1351.html</span>
<span style="color: #000000">}
</span><span style="color: #0000ff">else</span><span style="color: #000000">
{
</span><span style="color: #0000ff">echo</span> "文件{<span style="color: #800080">$filename</span>}删除成功"<span style="color: #000000">;
}
</span>?>

Delete all files in the directory

<span style="color: #0000ff">function</span> delFileUnderDir( <span style="color: #800080">$dirName</span>="../Smarty/templates/templates_c"<span style="color: #000000"> )
{
</span><span style="color: #008000">//</span><span style="color: #008000"> http://www.manongjc.com/article/1351.html</span>
<span style="color: #0000ff">if</span> ( <span style="color: #800080">$handle</span> = <span style="color: #008080">opendir</span>( "<span style="color: #800080">$dirName</span>"<span style="color: #000000"> ) ) {
   </span><span style="color: #0000ff">while</span> ( <span style="color: #0000ff">false</span> !== ( <span style="color: #800080">$item</span> = <span style="color: #008080">readdir</span>( <span style="color: #800080">$handle</span><span style="color: #000000"> ) ) ) {
   </span><span style="color: #0000ff">if</span> ( <span style="color: #800080">$item</span> != "." && <span style="color: #800080">$item</span> != ".."<span style="color: #000000"> ) {
   </span><span style="color: #0000ff">if</span> ( <span style="color: #008080">is_dir</span>( "<span style="color: #800080">$dirName</span>/<span style="color: #800080">$item</span>"<span style="color: #000000"> ) ) {
         delFileUnderDir( </span>"<span style="color: #800080">$dirName</span>/<span style="color: #800080">$item</span>"<span style="color: #000000"> );
   } </span><span style="color: #0000ff">else</span><span style="color: #000000"> {
   </span><span style="color: #0000ff">if</span>( <span style="color: #008080">unlink</span>( "<span style="color: #800080">$dirName</span>/<span style="color: #800080">$item</span>" ) )<span style="color: #0000ff">echo</span> "成功删除文件： <span style="color: #800080">$dirName</span>/<span style="color: #800080">$item</span><br />n"<span style="color: #000000">;
   }
   }
   }
   </span><span style="color: #008080">closedir</span>( <span style="color: #800080">$handle</span><span style="color: #000000"> );
}
}</span>