I put a div outside. Why are there two more empty divs? Why do there always appear two more empty divs every time? What is the reason for this? How can I remove it?
<code>$dir = "upload/";
if (is_dir($dir)){
if ($dh = opendir($dir)){
while (($file = readdir($dh))!= false){
echo '<div>';
if (!is_dir($file)) {
$filePath = $dir.$file;
echo "<img src='".$filePath."'/>";
}
echo '</div>';
}
closedir($dh);
}
}</code>I put a div outside. Why are there two more empty divs? Why do there always appear two more empty divs every time? What is the reason for this? How can I remove it?
<code>$dir = "upload/";
if (is_dir($dir)){
if ($dh = opendir($dir)){
while (($file = readdir($dh))!= false){
echo '<div>';
if (!is_dir($file)) {
$filePath = $dir.$file;
echo "<img src='".$filePath."'/>";
}
echo '</div>';
}
closedir($dh);
}
}</code>
Print it
<code>print_r(readdir($dh));</code>
You know why.
readdir will print out . and .., so your echo "
The two extra ones should be . for the current directory and . for the upper-level directory. Just filter these two out
ifjudgment<code class="php">
$dir = "upload/";
if (is_dir($dir)){
if ($dh = opendir($dir)){
while (($file = readdir($dh))!= false){
if (!is_dir($file)) {
//. 和.. 在文件夹下，不管在什么系统中. 和..都是存在的， .指向当前目录， ..上一级目录
if ($file === '.' || $file === '..') {
continue;
}
echo '</div>';
$filePath = $dir.$file;
echo "<img src='".$filePath."'/>";
echo '</div>';
}
}
closedir($dh);
}
}
</code>
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