10段可能用到的代码

关键词高亮

function highlight($sString, $aWords) {
	if (!is_array ($aWords) || empty ($aWords) || !is_string ($sString)) {
		return false;
	}

	$sWords = implode ('|', $aWords);
 	return preg_replace ('@\b('.$sWords.')\b@si', '<strong style="background-color:yellow">$1</strong>', $sString);
}

 

获取你的Feedburner的用户

function get_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);
	$xml = new SimpleXMLElement($data);
	$fb = $xml->feed->entry['circulation'];

	$nb = 0;
	foreach($xml->feed->children() as $circ){
		$nb += $circ['circulation'];
	}

	return round($nb/$interval);
}

 

自动生成密码

function generatePassword($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;
}

 

压缩多个CSS文件

header('Content-type: text/css');
ob_start("compress");
function compress($buffer) {
  /* remove comments */
  $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
  /* remove tabs, spaces, newlines, etc. */
  $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $buffer);
  return $buffer;
}

/* your css files */
include('master.css');
include('typography.css');
include('grid.css');
include('print.css');
include('handheld.css');

ob_end_flush();

 

获取短网址

function getTinyUrl($url) {
    return file_get_contents("http://tinyurl.com/api-create.php?url=".$url);
}

 

根据生日计算年龄

function age($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") – $year;
	$month_diff = date("m") – $month;
	$day_diff = date("d") – $day;
	if ($day_diff < 0 || $month_diff < 0) $year_diff–;

	return $year_diff;
}

 

计算执行时间

//Create a variable for start time
$time_start = microtime(true);

// Place your PHP/HTML/JavaScript/CSS/Etc. Here

//Create a variable for end time
$time_end = microtime(true);
//Subtract the two times to get seconds
$time = $time_end - $time_start;

echo 'Script took '.$time.' seconds to execute';

 

PHP的维护模式

function maintenance($mode = FALSE){
    if($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;
        }
    }
}

 

阻止CSS样式被缓存

<link href="/stylesheet.css?<?php echo time(); ?>" rel="stylesheet" type="text/css" /&glt;

 

为数字增加 st\nd\rd 等

function make_ranked($rank) {
	$last = substr( $rank, -1 );
	$seclast = substr( $rank, -2, -1 );
	if( $last > 3 || $last == 0 ) $ext = 'th';
	else if( $last == 3 ) $ext = 'rd';
	else if( $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;
}