316 lines
10 KiB
PHP
316 lines
10 KiB
PHP
<?php
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/*-----------------------------------------------------+
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* 工具包
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* @author yeahoo2000@gmail.com
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+-----------------------------------------------------*/
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class Util{
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/**
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* 运行一组性能测试函数，并比较结果
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* @param int $times 执行次数
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* @param array $testers 测试项目组
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* @return null
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*
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* 使用方法示例:
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* function func($a, $b){
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* return $a + $b;
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* }
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* $fname = 'func';
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* $params = array(4321, 1234);
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* Util::performance(1000000, array(
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* array("直接调用函数", function($i) use($fname, $params){
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* return func(4321, 1234);
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* }),
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* array("通过函数名调用函数", function($i) use($fname, $params){
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* return $fname(4321, 1234);
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* }),
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* array("通过call_user_func_array调用", function($i) use($fname, $params){
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* return call_user_func_array($fname, $params);
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* }),
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* ));
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*/
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public static function performance($times, $testers){
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$titleMaxLen = 40;
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if(self::inCLI()){
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$s = str_repeat(' ', $titleMaxLen - self::strSpace("测试项"));
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echo "测试项{$s}比值\t\t总用时(秒)\t平均用时(微秒)\t返回值\n";
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}else{
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echo "<table>\n";
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echo "<tr><th>项目</th><th>比值</th><th>总用时(秒)</th><th>平均用时(微秒)</th><th>返回值</th></tr>\n";
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}
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$base = 0;
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foreach($testers as $tester){
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list($title, $func) = $tester;
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$start = microtime(true);
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for($i = 0; $i < $times; $i++){
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$rtn = $func($i);
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}
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$total = microtime(true) - $start;
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if(!$base) $base = $total;
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$percent = $total / $base * 100;
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$avg = $total / $times * 1000 * 1000;
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ob_start();
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if(self::inCLI()){
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$s = str_repeat(' ', $titleMaxLen - self::strSpace($title));
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printf("%s%s%.2f%s\t\t%.4f sec\t%.2f us\t\t%s\n", $title, $s, $percent, '%', $total, $avg, $rtn);
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}else{
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printf("<tr><td>%s</td><td>%.2f%s</td><td>%.4f sec</td><td>%.4f us</td><td>%s</td></tr>\n", $title, $percent, '%', $total, $avg, $rtn);
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}
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ob_end_flush();
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}
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if(!self::inCLI()) echo "</table>";
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}
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/**
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* 检查当前脚本是否在命令行环境中执行
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* @return bool
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*/
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public static function inCLI(){
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if(php_sapi_name() == 'cli' && empty($_SERVER['REMOTE_ADDR'])){
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return true;
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} else {
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return false;
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}
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}
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/**
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* 获取客户端IP
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* @return string
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*/
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public static function clientIp(){
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return getenv('HTTP_CLIENT_IP')?:
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getenv('HTTP_X_FORWARDED_FOR')?:
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getenv('HTTP_X_FORWARDED')?:
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getenv('HTTP_FORWARDED_FOR')?:
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getenv('HTTP_FORWARDED')?:
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getenv('REMOTE_ADDR');
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}
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/**
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* 产生一个随机字串
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* @param int $len 指定随机字串的长度
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* @param string $scope 随机字符的取值范围
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* @return string
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*/
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public static function randString($len, $scope = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890") {
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$strLen = strlen($scope) - 1;
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$string = '';
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for($i = 0; $i < $len; $i ++){
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$string .= substr($scope, mt_rand(0, $strLen), 1);
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}
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return $string;
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}
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/**
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* 字串长度计算(可计算utf8)
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* 一个汉字(或是其它非ascii)的长度计为1
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* 注意：此函数性能不高，不要用于大量调用的情况
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* @param string $str 待计算的字串
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* @return int 长度
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*/
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public static function utf8strlen($str) {
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$i = 0;
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$count = 0;
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$len = strlen($str);
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while($i < $len){
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$chr = ord($str[$i]);
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$count++;
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$i++;
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if($i >= $len) break;
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if($chr & 0x80){
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$chr <<= 1;
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while($chr & 0x80){
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$i++;
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$chr <<= 1;
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}
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}
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}
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return $count;
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}
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/**
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* 返回一个中英文混合字符串的占位长度
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* 一个汉字(或是其它非ascii)占两个ascii字符的位置
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* 注意：此函数性能不高，不要用于大量调用的情况
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* @param string $str 待计算的字串
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* @return int 占位长度
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*/
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public static function strSpace($str){
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return (strlen($str) + self::utf8strlen($str)) / 2;
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}
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/*
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* 截取中文字符
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* @param string $str 字串
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* @param int $len 截取长度
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* @return string 截取后的字串
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*/
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public static function cnSubstr($str, $len){
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for($i = 0; $i < $len; $i ++){
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$temp_str = substr($str, 0, 1);
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if (ord($temp_str) > 127) {
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$i ++;
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if($i < $len){
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$new_str[] = substr($str, 0, 3);
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$str = substr($str, 3);
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}
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}else{
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$new_str [] = substr($str, 0, 1);
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$str = substr($str, 1);
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}
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}
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return join($new_str);
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}
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/**
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* 将Y-m-d H:i:s格式的时间转成unixtime
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* @param string $datatime 日期时间，格式: Y-m-d 或 Y-m-d H:i:s
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* @return int
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*/
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public static function unixtime($datetime){
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$d = explode(' ', $datetime);
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$date = explode('-', $d[0]);
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if(isset($d[1])){
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list($h, $i, $s) = explode(':', $d[1]);
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return mktime($h, $i, $s, $date [1], $date [2], $date [0]);
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}
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return mktime(0, 0, 0, $date [1], $date [2], 0 + $date [0]);
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}
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/**
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* 判断某个字串是否Y-m-d格式的时间字串
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* @param string $date 日期
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* @return bool
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*/
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public static function isDate($date){
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$dPat = '([1-9])|((0[1-9])|([1-2][0-9])|(3[0-2]))';
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$mPat = '([1-9])|((0[1-9])|(1[0-2]))';
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$yPat = '(19|20)[0-9]{2}';
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$pattern = "!^($yPat)-($mPat)-($dPat)$!";
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return preg_match($pattern, $date);
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}
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/**
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* 判断某个字串是否Y-m-d H:i:s格式的时间字串
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* @param string $datetime 日期时间
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* @return bool
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*/
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public static function isDatetime($datetime){
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$dPat = '([1-9])|((0[1-9])|([1-2][0-9])|(3[0-2]))';
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$mPat = '([1-9])|((0[1-9])|(1[0-2]))';
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$yPat = '(19|20)[0-9]{2}';
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$hPat = '([1-9])|(([0-1][0-9])|(2[0-3]))';
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$mPat = '([1-9])|([0-5][0-9])';
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return preg_match("!^($yPat)-($mPat)-($dPat) ($hPat):($mPat):($mPat)$!", $datetime);
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}
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public static function captcha($code, $height = 35){
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$colorMin = 0;
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$colorMax = 230;
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$fonts = ['fleck.ttf', 'molten.ttf', 'oneway.ttf', 'sixty.ttf'];
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$len = strlen($code);
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$width = $height * $len;
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$size = round($height * 0.70);
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$offset = round($size / $len);
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$image = imagecreate($width, $height);
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imagecolorallocate($image, 233, 233, 233);
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// 生成随机线条
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// for($i=0; $i<mt_rand(20, 30); $i++){
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// $x1 = mt_rand(0, $width - 12); $y1 = mt_rand(0, $height - 12);
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// $x2 = mt_rand(0, $width - 12); $y2 = mt_rand(0, $height - 12);
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// $x1 = $x1; $y1 = $y1;
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// $x2 = $x1 + mt_rand(-12, 12); $y2 = $y1 + mt_rand(-12, 12);
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// $color = imagecolorallocate($image, mt_rand(0, 230), mt_rand(0, 230), mt_rand(0, 230));
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// imageline($image, $x1, $y1, $x2, $y2, $color);
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// }
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// 生成字母
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$x = 3;
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for($i = 0; $i < strlen($code); $i++){
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$char = $code[$i];
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$font = FRAMEWORK_ROOT.'/fonts/'.$fonts[array_rand($fonts)];
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$y = $height - mt_rand(0, $offset);
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$c = imagecolorallocate($image, mt_rand($colorMin, $colorMax), mt_rand($colorMin, $colorMax), mt_rand($colorMin, $colorMax));
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imagettftext($image, $size, 0, $x, $y, $c, $font , $char);
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$x += $size + mt_rand(-$offset, $offset);
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}
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// 输出图片
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header("Expires: -1");
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header("Cache-Control: no-store, private, post-check=0, pre-check=0, max-age=0", false);
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header("Pragma: no-cache");
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header('Content-Type: image/png');
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imagepng($image);
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imagedestroy($image);
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}
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/**
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* 获取文件尾部内容
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* @param string $file 文件名
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* @return int $len 长度，单位byte
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*/
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public static function tail($file, $len = 20000){
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if(!file_exists($file)) return;
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clearstatcache();
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$size = filesize($file) - $len;
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$size = $size < 0? 0 : $size;
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$f = fopen($file, "r");
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fseek($f, $size);
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$text = '';
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while($s = fgets($f)){
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$text .= $s;
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}
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fclose($f);
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return $text;
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}
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/**
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* 写文件系统
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* @param string $file 文件名
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* @param string $content 内容
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*/
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public static function writeFile($file, $content, $mode='wb'){
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$oldMask= umask(0);
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$fp= @fopen($file, $mode);
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fwrite($fp, $content);
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fclose($fp);
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umask($oldMask);
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}
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/**
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* 对明文密码进行加密
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* @param string $pwd 明文密码
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* @return string 加密后的密码
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*/
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public static function password($pwd){
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return md5(sha1($pwd.'tool+*+#@').'toolPassword*+!#!~$@#');
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}
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/**
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* 递归创建所有不存在的目录
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* @param string $path 目标路径
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* @param int $mode 权限，安全方案：注意:文件夹必须带有x权限才能有读取权限,文件带有x权限则有执行权限
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* @return bool
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*/
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public static function _mkdir($path, $mode = 0755){
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if (is_dir($path)) return true;
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return mkdir($path, $mode, true);
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}
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/**
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* 获得文件大小为8kb这样的格式
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* @param int $bytes 文件大小整数
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* @return string 返回格式如: 1 Kb or 1 MB..
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*/
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public static function formatBytes($bytes){
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//注：使用if是最快速的
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if ($bytes < 1024) return $bytes . ' B';
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elseif ($bytes < 1048576) return round($bytes / 1024, 2) . ' KB';
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elseif ($bytes < 1073741824) return round($bytes / 1048576, 2) . ' MB';
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elseif ($bytes < 1099511627776) return round($bytes / 1073741824, 2) . ' GB';
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else return round($bytes / 1099511627776, 2) . ' TB';
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}
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}
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