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is_writable("config.php");
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install.php //°²×°Îļþ
<?php
$config_files = "./config.php";
if (is_writable($config_files)) {
echo "<font color=green>¿Éд</font><br/>";
} else {
echo "<font color=red>$config_files²»¿Éд</font>";
exit;
}
if ($_POST["install"]) {
$db_host = $_POST["db_host"];
$db_user = $_POST["db_user"];
$db_pass = $_POST["db_pass"];
$db_dbname = $_POST["db_dbname"];
$db_prefix = $_POST["db_prefix"];
$config_str = '<?php';
$config_str .= "\n";
$config_str .= '$mysql_host = "' . $db_host . '";';
$config_str .= "\n";
$config_str .= '$mysql_user = "' . $db_user . '";';
$config_str .= "\n";
$config_str .= '$mysql_pass = "' . $db_pass . '";';
$config_str .= "\n";
$config_str .= '$mysql_dbname = "' . $db_dbname . '";';
$config_str .= "\n";
$config_st
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bool in_array ( mixed needle,array haystack[,bool strict]) ²éÕÒÖ¸¶¨ÔªËØ£»
array array_keys (arraqy input [, mixed search_value]) ·µ»Ø¼üÖµ×é³ÉµÄÊý×飻
bool array_key_exists(mixed key,array search) ÅжϼüÖµÊÇ·ñΪָ¶¨µÄ¼üÖµ£»
array array_values (array input) ·µ»ØÊý×éÖеÄÔªËØÖµ£ ......
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2008-10-23 23:25
Ceil: ¼ÆËã´óÓÚÖ¸¶¨ÊýµÄ×îСÕûÊý¡£
Floor: ¼ÆËãСÓÚÖ¸¶¨ÊýµÄ×î´óÕûÊý¡£
round: ËÄÉáÎåÈë¡£
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<?php
$a=20;
$b = 6;
echo ($a/$b)."<br>"; //out 3.3333333333333
echo ceil($a/$b)."<br>"; //out 4
echo floor($a/$b)."<br> ......
<?php
function remove_directory($dir) {
if ($handle = opendir("$dir")) {
while (false !== ($item = readdir($handle))) {
if ($item != "." && $item != "..") {
......