摘要：
代码片段==分割==$fp=fopen($filename,"w");fwrite($fp,json_encode($userinfo));fclose($fp);date("H:i:s");SELECT*FROMt_detailsWHEREnicknameISNULLif(strlen($foo)<5){echo“Fooistooshort”;}vs.（与下面的技巧做比较）if(!isset($foo{5})){echo“Fooistooshort”;}$blog='博客园';echo'Hello!',$blog,'thisaITblog';publicfunctiongetFriendlyTime($timestamp){$thisYear=date("Y");$thisMonth=date("n");$thisDay=date("j");$someYear=date("Y",$timestamp);$someMonth=date("n",$timestamp);$someDay=date("j",$timestamp);if($someYear==$thisYear){if($someMonth==$thisMonth){if($thisDay==$someDay){returndate("H:i:s",$timestamp);}returndate("n月j日H:i",$timestamp);}returndate("n月j日H:i",$timestamp);}returndate("Y年n月j日H:i",$timestamp);}publicfunctiongetFixedLengthString($string,$length=6){if(mb_strlen($string,"UTF-8")>$length){returnmb_substr($string,0,$length,"UTF-8")."...";}return$string;}
$fp = fopen($filename, "w");
fwrite($fp, json_encode($userinfo));
fclose($fp);
date("H:i:s");
SELECT * FROM t_details WHERE nickname IS NULL
if (strlen($foo) < 5) { echo “Foo is too short”; }
vs.（与下面的技巧做比较）
if (!isset($foo{5})) { echo “Foo is too short”; }
$blog = '博客园';
echo 'Hello!',$blog,'this a IT blog';
public function getFriendlyTime($timestamp) { $thisYear = date("Y"); $thisMonth = date("n"); $thisDay = date("j"); $someYear = date("Y", $timestamp); $someMonth = date("n", $timestamp); $someDay = date("j", $timestamp); if ($someYear == $thisYear) { if ($someMonth == $thisMonth) { if ($thisDay == $someDay) { return date("H:i:s", $timestamp); } return date("n月j日 H:i", $timestamp); } return date("n月j日 H:i", $timestamp); } return date("Y年n月j日 H:i", $timestamp); }
public function getFixedLengthString($string, $length = 6) { if (mb_strlen($string, "UTF-8") > $length) { return mb_substr($string, 0, $length, "UTF-8")."..."; } return $string; }