Web开发者必备的10个PHP代码片段

[代码]关键词高亮

functionhighlight($sString,$aWords){
if(!is_array($aWords)||emptyempty($aWords)||!is_string($sString)){
returnfalse;
}
$sWords=implode('|',$aWords);
returnpreg_replace('@\b('.$sWords.')\b@si','<strongstyle="background-color:yellow">$1</strong>',$sString);
}

[代码]获取你的Feedburner的用户

functionget_average_readers($feed_id,$interval=7){
$today=date('Y-m-d',strtotime("now"));
$ago=date('Y-m-d',strtotime("-".$interval."days"));
$feed_url="https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=".$feed_id."&dates=".$ago.",".$today;
$ch=curl_init();
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_URL,$feed_url);
$data=curl_exec($ch);
curl_close($ch);
$xml=newSimpleXMLElement($data);
$fb=$xml->feed->entry['circulation'];
$nb=0;
foreach($xml->feed->children()as$circ){
$nb+=$circ['circulation'];
}
returnround($nb/$interval);
}

[代码]自动生成密码

functiongeneratePassword($length=9,$strength=0){
$vowels='aeuy';
$consonants='bdghjmnpqrstvz';
if($strength>=1){
$consonants.='BDGHJLMNPQRSTVWXZ';
}
if($strength>=2){
$vowels.="AEUY";
}
if($strength>=4){
$consonants.='23456789';
}
if($strength>=8){
$vowels.='@#$%';
}
$password='';
$alt=time()%2;
for($i=0;$i<$length;$i++){
if($alt==1){
$password.=$consonants[(rand()%strlen($consonants))];
$alt=0;
}else{
$password.=$vowels[(rand()%strlen($vowels))];
$alt=1;
}
}
return$password;
}

[代码]压缩多个CSS文件

header('Content-type:text/css');
ob_start("compress");
functioncompress($buffer){
/*removecomments*/
$buffer=preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!','',$buffer);
/*removetabs,spaces,newlines,etc.*/
$buffer=str_replace(array("\r\n","\r","\n","\t",'','',''),'',$buffer);
return$buffer;
}
/*yourcssfiles*/
include('master.css');
include('typography.css');
include('grid.css');
include('print.css');
include('handheld.css');
ob_end_flush();

[代码]获取短网址

functiongetTinyUrl($url){
returnfile_get_contents("http://tinyurl.com/api-create.php?url=".$url);
}

[代码]根据生日计算年龄

functionage($date){
$year_diff='';
$time=strtotime($date);
if(FALSE===$time){
return'';
}
$date=date('Y-m-d',$time);
list($year,$month,$day)=explode("-",$date);
$year_diff=date("Y")�C$year;
$month_diff=date("m")�C$month;
$day_diff=date("d")�C$day;
if($day_diff<0||$month_diff<0)$year_diff�C;
return$year_diff;
}

[代码]计算执行时间

//Createavariableforstarttime
$time_start=microtime(true);
//PlaceyourPHP/HTML/JavaScript/CSS/Etc.Here
//Createavariableforendtime
$time_end=microtime(true);
//Subtractthetwotimestogetseconds
$time=$time_end-$time_start;
echo'Scripttook'.$time.'secondstoexecute';

[代码]PHP的维护模式

functionmaintenance($mode=FALSE){
if($mode){
if(basename($_SERVER['SCRIPT_FILENAME'])!='maintenance.php'){
header("Location:http://example.com/maintenance.php");
exit;
}
}else{
if(basename($_SERVER['SCRIPT_FILENAME'])=='maintenance.php'){
header("Location:http://example.com/");
exit;
}
}
}

[代码]阻止CSS样式被缓存

<linkhref="/stylesheet.css?<?phpechotime();?>"rel="stylesheet"type="text/css"/&glt;

[代码]为数字增加stndrd等

functionmake_ranked($rank){
$last=substr($rank,-1);
$seclast=substr($rank,-2,-1);
if($last>3||$last==0)$ext='th';
elseif($last==3)$ext='rd';
elseif($last==2)$ext='nd';
else$ext='st';
if($last==1&&$seclast==1)$ext='th';
if($last==2&&$seclast==1)$ext='th';
if($last==3&&$seclast==1)$ext='th';
return$rank.$ext;
}

原文：http://www.oschina.net/code/snippet_12_6024