php.ini文件配置
时间配置PRC中国
date.timezone = PRC
文件上传
file_uploads = On //支持http上传
upload_tmp_dir = //临时文件保存路径
upload_max_filesize = 2M //上传的大小限制
post_max_size = 10M //post提交的大小限制
max_file_uploads = 20 //允许一次上传的最大文件数
XDEBUG设置，函数嵌套循环次数:
报错内容：Fatal error: Maximum function nesting level of '100' reached, aborting!
解决办法
查找xdebug 找到zend_extension = “D:/wamp/bin/php/php5.3.13/zend_ext/php_xdebug-2.2.0-5.3-vc9-x86_64.dll” 这句在前面加;注视掉，在后面加上
xdebug.max_nesting_level = 500
乱码处理
防止乱码 先把utf-8转换成gb2312，copy完成后再转回utf-8
$newFile = iconv("utf-8","gb2312", $newFile);
输出字体颜色
echo '<span style="color:#F00" >字体为红色</span>';
格式化日期为时间戳
strtotime('2013-03-18')
$startTime='2013-03-18';
$endTime='2013-03-20'
$days=ceil((strtotime($endTime)-strtotime($startTime))/86400)+1 //求相差几天 60s*60min*24H
$shorStartTime=str_replace('-', '.', substr($startTime, 5)); //展示方式为03.18
1 <?php 2 //PHP计算两个时间差的方法 3 $startdate="2010-12-11 11:40:00"; 4 $enddate="2012-12-12 11:45:09"; 5 $date=floor((strtotime($enddate)-strtotime($startdate))/86400); 6 $hour=floor((strtotime($enddate)-strtotime($startdate))%86400/3600); 7 $minute=floor((strtotime($enddate)-strtotime($startdate))%86400/60); 8 $second=floor((strtotime($enddate)-strtotime($startdate))%86400%60); 9 echo $date."天<br>"; 10 echo $hour."小时<br>"; 11 echo $minute."分钟<br>"; 12 echo $second."秒<br>"; 13 ?>
1 <?php 2 /** 3 * 时间差计算 4 * 5 * @param Timestamp $time 6 * @return String Time Elapsed 7 * @author Shelley Shyan 8 * @copyright http://phparch.cn (Professional PHP Architecture) 9 */ 10 function time2Units ($time) 11 { 12 $year = floor($time / 60 / 60 / 24 / 365); 13 $time -= $year * 60 * 60 * 24 * 365; 14 $month = floor($time / 60 / 60 / 24 / 30); 15 $time -= $month * 60 * 60 * 24 * 30; 16 $week = floor($time / 60 / 60 / 24 / 7); 17 $time -= $week * 60 * 60 * 24 * 7; 18 $day = floor($time / 60 / 60 / 24); 19 $time -= $day * 60 * 60 * 24; 20 $hour = floor($time / 60 / 60); 21 $time -= $hour * 60 * 60; 22 $minute = floor($time / 60); 23 $time -= $minute * 60; 24 $second = $time; 25 $elapse = ''; 26 27 $unitArr = array('年' =>'year', '个月'=>'month', '周'=>'week', '天'=>'day', 28 '小时'=>'hour', '分钟'=>'minute', '秒'=>'second' 29 ); 30 31 foreach ( $unitArr as $cn => $u ) 32 { 33 if ( $$u > 0 ) 34 { 35 $elapse = $$u . $cn; 36 break; 37 } 38 } 39 40 return $elapse; 41 } 42 43 $past = 2052345678; // Some timestamp in the past 44 $now = time(); // Current timestamp 45 $diff = $now - $past; 46 47 echo '发表于' . time2Units($diff) . '前'; 48 ?>
php字符串处理
substr_count($str,'|'); //计算某个字符在字符串中出现的次数 explode('|', $str, 2); //把一个字符以某个字符分割成几段
举例：7/3 整数部分：intval(floor(7/3)) 余数部分：7%3