一些很有用的 PHP 程式碼片段

 $host="localhost";
 $uname="資料庫使用者名稱";
 $pass="資料庫密碼" ;
 $database = "資料庫名稱";
 $connection=mysql_connect($host,$uname,$pass)
 or die("資料庫連線失敗");

 $result =mysql_select_db($database)
 or die("無法選擇資料庫");

?>

函數words_limit( $str, $num, $append_str='' ){
$words = preg_split( '/[s] /', $str, -1, PREG_SPLIT_OFFSET_CAPTURE );
 if( isset($words[$num][1]) ){
 $str = substr( $str, 0, $words[$num][1] ).$append_str;
 }
unset( $words, $num );
返回修剪( $str );>
}

echo Words_limit($yourString, 50,'...' ) ;

或

echo Words_limit($yourString, 50);

function video_image($url){
 $image_url = parse_url($url);
 if($image_url['host'] == '$url);
 if($image_url['host'] == 'www.youtube. com' ||
 $image_url['host'] == 'youtube.com'){
 $array =explode("&", $image_url['query']);
 return "http ://img.youtube.com/vi/".substr($array[0], 2)."/0.jpg";
 }else if($image_url['host'] == 'www. youtu.be' ||
 $image_url['host'] == 'youtu.be'){
 $array =explode("/", $image_url['path']);
 return "http://img.youtube.com/vi/".$array[1]."/0.jpg";
 }else if($image_url['host'] == 'www.vimeo.com ' ||
 $image_url['host'] == 'vimeo.com'){
 $hash = unserialize(file_get_contents("http://vimeo.com/api/v2/video/".
 substr($image_url['path'], 1).".php"));
 return $hash[0]["thumbnail_medium"];
 }
}

函數age_from_dob($dob){
$dob = strtotime($dob);
$y = date('Y', $dob);
 if (($m = (date('m') - date('m', $dob)))  $y ;
 } elseif ($m == 0 && date( ' d') - 日期('d', $dob)  $y ;
 }
回傳日期('Y') - $y;
}

//設定Cookie
setcookie("name", 'value', time() 3600*60*30);

//顯示Cookie
if ($_COOKIE["name"]!=""){
$_SESSION['name'] = $_COOKIE["name"];

//方法1
echo substr(md5(uniqid()), 0, 8);

//方法2
function rand_password( $length){
 $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
 $chars .= '0123456789' ;
 $chars .= '! :[]{}|= ';

 $str = '';
 $max = strlen($chars) - 1;

 for ($i=0; $i  $str .= $chars[rand(0, $max)];

 return $str;
}

date_default_timezone_set("亞洲/加爾各答");

function dt_differ($start, $end){
 $start = date("G:i: s:m:d:Y", strtotime($start));
 $date1=explode(":", $start);

 $end = date("G:i:s: m:d:Y", strtotime($end));
 $date2=explode(":", $end);

 $starttime = mktime(date($date1[0]),日期($date1[1]),日期($date1[2]),
日期($date1[3]),日期($date1[4]),日期($date1[5]));
 $endtime = mktime(日期($date2[0]),日期($date2[1]),日期($date2[2]),
日期($date2[3]),日期($date2 [4]),date($date2[5]));

 $seconds_dif = $starttime-$endtime;

 return $seconds_dif;

function secondary2days($mysec) {
 $mysec = (int)$mysec;
 if ( $mysec === 0 ) {
 return '0第二';
 }

 $分鐘= 0;
 $小時= 0;
 $天= 0;


 if ( $mysec >= 60 ) {
 $mins = (int)($mysec / 60);
 $mysec = $mysec % 60;
 }
 if ( $mins >= 60 ) {
 $
 if ( $mins >= 60 ) {
 $
 $ hours = (int)($mins / 60);
 $mins = $mins % 60;
 }
 if ( $hours >= 24 ) {
 $days = (int) ($小時/ 24);
 $小時= $小時% 60;
 }

 $output = '';

 if ($days){
 $輸出. = $days." 天";
 }
 if ($hours) {
 $output .= $hours." 小時";
 }
 if ( $mins ) {
 $output .= $mins." 分鐘";
 }
 if ( $mysec ) {
 $output .= $mysec." 秒";
 }

$zip = zip_open("moooredale.zip");
 if ($zip) {
 while ($zip_entry = zip_readry = zip_read zip)) {
 $fp = fopen(zip_entry_name($zip_entry), "w");
 if (zip_entry_open($zip, $zip_entry, "r")) {
 $buf = zip_entry_read ( $zip_entry, zip_entry_filesize($zip_entry));
 fwrite($fp,"$buf");
 zip_entry_close($zip_entry);
 fclose($fp);
zip_close($zip);
}
?>