首页 / 网页编程 / PHP / 10个实用的PHP代码片段
关键词高亮 复制代码 代码如下: function highlight($sString, $aWords) { if (!is_array ($aWords) || empty ($aWords) || !is_string ($sString)) { return false; } $sWords = implode ("|", $aWords); return preg_replace ("@(".$sWords.")@si", "<strong style="background-color:yellow">$1</strong>", $sString); } 获取你的Feedburner的用户 复制代码 代码如下: function get_average_readers($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/$interval); } 自动生成密码 复制代码 代码如下: function generatePassword($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 $password; } 压缩多个CSS文件 复制代码 代码如下: header("Content-type: text/css"); ob_start("compress"); function compress($buffer) { /* remove comments */ $buffer = preg_replace("!/*[^*]**+([^/][^*]**+)*/!", "", $buffer); /* remove tabs, spaces, newlines, etc. */ $buffer = str_replace(array("
", "
", "
", " ", " ", " ", " "), "", $buffer); return $buffer; } /* your css files */ include("master.css"); include("typography.css"); include("grid.css"); include("print.css"); include("handheld.css"); ob_end_flush(); 获取短网址 复制代码 代码如下: function getTinyUrl($url) { return file_get_contents("http://tinyurl.com/api-create.php?url=".$url); } 根据生日计算年龄 复制代码 代码如下: function age($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 复制代码 代码如下: //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 复制代码 代码如下: 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 复制代码 代码如下: <link href="/stylesheet.css?<?php echo time(); ?>" rel="stylesheet" type="text/css" /&glt; 为数字增加 st
d
d 等 复制代码 代码如下: 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; }
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