いくつかの便利な PHP コード スニペット

 $host="localhost";
 $uname="データベース ユーザー名";
 $pass="データベース パスワード";
 $database = "データベース名";
 $connection=mysql_connect( $host,$uname,$pass)
 or die("データベース接続に失敗しました");

 $result=mysql_select_db($database)
 or die("データベースを選択できません");

?>

function 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 );
returnトリム( $str );>
}

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

or

echowords_limit($yourString, 50);

function video_image($url){
 $image_url = parse_url($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"] ;
 }
}

function age_from_dob($dob){
$dob = strtotime($dob);
$y = date('Y', $dob);
 if (($m = (date('m') - date('m', $dob))) < 0) {
 $y++;
 } elseif ($m == 0 && date('d') - date('d', $dob) <0) {
 $y++;
 }
return date('Y') - $y;
}

echo age_from_dob('2005/04/19'); yyyy/mm/dd 形式の日付。

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

//显示 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;
}

echo rand_password(16);

date_default_timezone_set("アジア/カルカッタ");

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

 $秒_差分 = $開始時間-$終了時間;

 戻り $秒_差;
}

function Seconds2days($mysec) {
 $mysec = (int)$mysec;
 if ( $mysec === 0 ) {
 return '0秒';
 }

 $mins = 0;
 $時間 = 0;
 $days = 0;


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

 $output = '';

 if ($days){
 $output .= $days." days ";
 }
 if ($hours) {
 $output .= $hours." 時間 ";
 }
 if ( $mins ) {
 $output .= $mins." 分 ";
 }
 if ( $mysec ) {
 $output .= $mysec." 秒 ";
 }
 $output = rtrim($output);
 return $output;
}

$zip = zip_open("moooredale.zip");
 if ($zip) {
 while ($zip_entry = zip_read($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);
}
?>