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function GetIP () {//Get IP
if ($_server["http_x_forwarded_for"])
$ip = $_server["Http_x_forwarded_for"];
else if ($_server["HTTP_CLIENT_IP"])
$ip = $_server["Http_client_ip"];
else if ($_server["REMOTE_ADDR"])
$ip = $_server["REMOTE_ADDR"];
else if (getenv ("Http_x_forwarded_for"))
$ip = getenv ("Http_x_forwarded_for");
else if (getenv ("Http_client_ip"))
$ip = getenv ("Http_client_ip");
else if (getenv ("REMOTE_ADDR"))
$ip = getenv ("REMOTE_ADDR");
Else
$ip = "Unknown";
return $IP;
}
?>
Copy Code code as follows:
<?php
function DateAdd ($date, $int, $unit = "D") {//Time increase (can also be improved as time and minutes can be increased, time to fill)
$DATEARR = Explode ("-", $date);
$value [$unit] = $int;
Return date ("Y-m-d", Mktime (0,0,0, $DATEARR [1] + $value [' m '], $DATEARR [2] + $value [' d '], $DATEARR [0] + $value [' Y ']));
}
function Getweekday ($date) {//Calculate the date given is the day of the week
$DATEARR = Explode ("-", $date);
Return Date ("W", Mktime (0,0,0, $DATEARR [1], $DATEARR [2], $DATEARR [0]));
}
?>
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function Check_date ($date) {//check date is legal date
$DATEARR = Explode ("-", $date);
if (is_numeric ($dateArr [0]) && is_numeric ($DATEARR [1]) && is_numeric ($DATEARR [2])) {
return Checkdate ($DATEARR [1], $DATEARR [2], $DATEARR [0]);
}
return false;
}
function Check_time ($time) {//Check time is legal time
$TIMEARR = Explode (":", $time);
if (is_numeric ($timeArr [0]) && is_numeric ($TIMEARR [1]) && is_numeric ($TIMEARR [2])) {
if ($timeArr [0] >= 0 && $timeArr [0] <=) && ($TIMEARR [1] >= 0 && $timeArr [1] <= 59) && ($TIMEARR [2] >= 0 && $timeArr [2] <= 59))
return true;
Else
return false;
}
return false;
}
function DateDiff ($date 1, $date 2, $unit = "") {//Time comparison function, return two date difference a few seconds, minutes, hours or days
Switch ($unit) {
Case ' s ':
$dividend = 1;
Break
Case ' I ':
$dividend = 60;
Break
Case ' H ':
$dividend = 3600;
Break
Case ' d ':
$dividend = 86400;
Break
Default
$dividend = 86400;
}
$time 1 = strtotime ($date 1);
$time 2 = strtotime ($date 2);
if ($time 1 && $time 2)
return (float) ($time 1-$time 2)/$dividend;
return false;
}
?>
PHP redirect
Copy Code code as follows:
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Method One: Header ("Location:index.php");
Method Two: echo "<scrīpt>window.location =" $PHP _self ";</scrīpt>";
Method Three: Echo "<meta http-equiv=" Refresh "content=" 0; Url=index.php ">";
?>
Get Visitor Browser
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function Browse_infor ()
{
$browser = ""; $browserver = "";
$Browsers =array ("Lynx", "MOSAIC", "AOL", "Opera", "JAVA", "Macweb", "Webexplorer", "OmniWeb");
$Agent = $GLOBALS ["Http_user_agent"];
For ($i =0 $i <=7; $i + +)
{
if (Strpos ($Agent, $Browsers [$i])
{
$browser = $Browsers [$i];
$browserver = "";
}
}
if (Ereg ("Mozilla", $Agent) &&!ereg ("MSIE", $Agent))
{
$temp =explode ("(", $Agent); $Part = $temp [0];
$temp =explode ("/", $Part); $browserver = $temp [1];
$temp =explode ("", $browserver); $browserver = $temp [0];
$browserver =preg_replace ("/([D.] +)/"," 1 ", $browserver);
$browserver = "$browserver";
$browser = "Netscape Navigator";
}
if (Ereg ("Mozilla", $Agent) && ereg ("Opera", $Agent))
{
$temp =explode ("(", $Agent); $Part = $temp [1];
$temp =explode (")", $Part); $browserver = $temp [1];
$temp =explode ("", $browserver); $browserver = $temp [2];
$browserver =preg_replace ("/([D.] +)/"," 1 ", $browserver);
$browserver = "$browserver";
$browser = "Opera";
}
if (Ereg ("Mozilla", $Agent) && ereg ("MSIE", $Agent))
{
$temp = Explode ("(", $Agent); $Part = $temp [1];
$temp = Explode (";", $Part); $Part = $temp [1];
$temp = Explode ("", $Part); $browserver = $temp [2];
$browserver =preg_replace ("/([D.] +)/"," 1 ", $browserver);
$browserver = "$browserver";
$browser = "Internet Explorer";
}
if ($browser!= "")
{
$browseinfo = "$browser $browserver";
}
Else
{
$browseinfo = "Unknown";
}
return $browseinfo;
}
Call Method $browser=browseinfo (), return results directly
?>
Get the visitor's operating system
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function Osinfo () {
$os = "";
$Agent = $GLOBALS ["Http_user_agent"];
if (eregi (' win ', $Agent) && strpos ($Agent, ' 95 ')) {
$os = "Windows 95";
}
ElseIf (Eregi (' Win 9x ', $Agent) && strpos ($Agent, ' 4.90 ')) {
$os = "Windows ME";
}
ElseIf (' Win ', $Agent) && ereg (' Eregi ', $Agent)) {
$os = "Windows 98";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 5.0 ', $Agent)) {
$os = "Windows 2000";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT ', $Agent)) {
$os = "Windows NT";
}
ElseIf (eregi (' win ', $Agent) && eregi (' NT 5.1 ', $Agent)) {
$os = "Windows XP";
}
ElseIf (' Win ', $Agent) && ereg (' Eregi ', $Agent)) {
$os = "Windows 32";
}
ElseIf (eregi (' Linux ', $Agent)) {
$os = "Linux";
}
ElseIf (eregi (' Unix ', $Agent)) {
$os = "Unix";
}
ElseIf (Eregi (' Sun ', $Agent) && eregi (' OS ', $Agent)) {
$os = "SunOS";
}
ElseIf (eregi (' IBM ', $Agent) && eregi (' OS ', $Agent)) {
$os = "IBM os/2";
}
ElseIf (eregi (' Mac ', $Agent) && eregi (' PC ', $Agent)) {
$os = "Macintosh";
}
ElseIf (eregi (' PowerPC ', $Agent)) {
$os = "PowerPC";
}
ElseIf (eregi (' AIX ', $Agent)) {
$os = "AIX";
}
ElseIf (eregi (' HPUX ', $Agent)) {
$os = "HPUX";
}
ElseIf (eregi (' NetBSD ', $Agent)) {
$os = "NetBSD";
}
ElseIf (eregi (' BSD ', $Agent)) {
$os = "BSD";
}
ElseIf (Ereg (' OSF1 ', $Agent)) {
$os = "OSF1";
}
ElseIf (Ereg (' IRIX ', $Agent)) {
$os = "IRIX";
}
ElseIf (eregi (' FreeBSD ', $Agent)) {
$os = "FreeBSD";
}
if ($os = = ") $os =" Unknown ";
return $os;
}
Call Method $os=os_infor ();
?>
File Format class
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$mime _types = Array (
' gif ' => ' image/gif ',
' jpg ' => ' image/jpeg ',
' JPEG ' => ' image/jpeg ',
' Jpe ' => ' image/jpeg ',
' BMP ' => ' image/bmp ',
' PNG ' => ' image/png ',
' tif ' => ' Image/tiff ',
' TIFF ' => ' Image/tiff ',
' Pict ' => ' image/x-pict ',
' Pic ' => ' image/x-pict ',
' pct ' => ' image/x-pict ',
' tif ' => ' Image/tiff ',
' TIFF ' => ' Image/tiff ',
' PSD ' => ' image/x-photoshop ',
' swf ' => ' Application/x-shockwave-flash ',
' JS ' => ' application/x-javascrīpt ',
' PDF ' => ' application/pdf ',
' ps ' => ' application/postscrīpt ',
' EPS ' => ' application/postscrīpt ',
' AI ' => ' application/postscrīpt ',
' WMF ' => ' application/x-msmetafile ',
' CSS ' => ' text/css ',
' htm ' => ' text/html ',
' HTML ' => ' text/html ',
' txt ' => ' text/plain ',
' xml ' => ' Text/xml ',
' WML ' => ' text/wml ',
' Wbmp ' => ' image/vnd.wap.wbmp ',
' Mid ' => ' Audio/midi ',
' WAV ' => ' audio/wav ',
' mp3 ' => ' audio/mpeg ',
' MP2 ' => ' audio/mpeg ',
' avi ' => ' Video/x-msvideo ',
' MPEG ' => ' video/mpeg ',
' mpg ' => ' video/mpeg ',
' Qt ' => ' video/quicktime ',
' mov ' => ' video/quicktime ',
' Lha ' => ' Application/x-lha ',
' Lzh ' => ' Application/x-lha ',
' Z ' => ' application/x-compress ',
' Gtar ' => ' Application/x-gtar ',
' GZ ' => ' application/x-gzip ',
' gzip ' => ' application/x-gzip ',
' tgz ' => ' application/x-gzip ',
' Tar ' => ' Application/x-tar ',
' bz2 ' => ' application/bzip2 ',
' Zip ' => ' application/zip ',
' Arj ' => ' Application/x-arj ',
' rar ' => ' application/x-rar-compressed ',
' hqx ' => ' application/mac-binhex40 ',
' Sit ' => ' application/x-stuffit ',
' Bin ' => ' application/x-macbinary ',
' UU ' => ' Text/x-uuencode ',
' Uue ' => ' Text/x-uuencode ',
' Latex ' => ' Application/x-latex ',
' Ltx ' => ' Application/x-latex ',
' Tcl ' => ' application/x-tcl ',
' PGP ' => ' APPLICATION/PGP ',
' ASC ' => ' APPLICATION/PGP ',
' exe ' => ' application/x-msdownload ',
' Doc ' => ' Application/msword ',
' RTF ' => ' application/rtf ',
' xls ' => ' application/vnd.ms-excel ',
' ppt ' => ' application/vnd.ms-powerpoint ',
' MDB ' => ' application/x-msaccess ',
' WRI ' => ' application/x-mswrite ',
);
?>
PHP generates Excel documents
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Header ("Content-type:application/vnd.ms-excel");
Header ("Content-disposition:filename=test.xls");
echo "TEST1T";
echo "Test2tn";
echo "TEST1T";
echo "Test2tn";
echo "TEST1T";
echo "Test2tn";
echo "TEST1T";
echo "Test2tn";
echo "TEST1T";
echo "Test2tn";
echo "TEST1T";
echo "Test2tn";
Change the file header to output the. doc. xls file format
?>
Time comparison issues
Give a simple example to illustrate: for example, a forum on the day posted posts with new pictures marked.
Method One:
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$db->rows[$i][date] is the value of the DateTime field in the database.
$today =time ();
$theDay =date ("y-m-d h:i:s", $today -24*3600);
$newTag = $db->rows[$i][date]>= $theDay? " ': "";
Method Two:
$newTag = $db->rows[$i][date]>=date ("y-m-d 00:00:00")? ': "";
?>
Copy Code code as follows:
Extracts pages and browser-submitted variables that are equivalent to making php.ini open global variables
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@extract ($_server, Extr_skip);
@extract ($_session, Extr_skip);
@extract ($_post, Extr_skip);
@extract ($_files, Extr_skip);
@extract ($_get, Extr_skip);
@extract ($_env, Extr_skip);
?>
Reading file functions
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function ReadFromFile ($file _name) {
if (file_exists ($file _name)) {
$filenum =fopen ($file _name, "R");
Flock ($filenum, LOCK_EX);
$file _data=fread ($filenum, FileSize ($file _name));
Rewind ($filenum);
Fclose ($filenum);
return $file _data;
}
}
?>
Write to a file function
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function WriteToFile ($file _name, $data, $method = "W") {
$filenum =fopen ($file _name, $method);
Flock ($filenum, LOCK_EX);
$file _data=fwrite ($filenum, $data);
Fclose ($filenum);
return $file _data;
}
?>
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