10 个实用PHP代码片段

作者：aolinks
关键词高亮

function highlight($sString, $aWords) {
    if (!is_array ($aWords) || emptyempty ($aWords) || !is_string ($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 $bu