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86 lines
2.2 KiB
86 lines
2.2 KiB
<?php
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class Tool_Str{
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static function safestr($pStr, $pDefault=false){
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if(!$pStr = htmlspecialchars($pStr)){
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return $pDefault;
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}
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return $pStr;
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}
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/**
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* 替换危险字符串
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*
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* @param str $pStr 危险字符
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* @param array $pTrans 自定义替换规则
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* @return str 安全字符
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*/
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static function filter($pStr, $pTrans=array()){
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$tTrans = array("'"=>'', '"'=>'', '`'=>'', '\\'=>'', '<'=>'＜', '>'=>'＞');
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return strtr(trim($pStr), array_merge($tTrans, $pTrans));
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}
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/**
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* 获得 KEY 对应的 数组值
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*
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* @param array $pArr
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* @param str $pKey
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* @param str $pDefault
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*/
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static function arr2str($pArr, $pKey, $pDefault=''){
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return isset($pArr[$pKey])? $pArr[$pKey]: $pDefault;
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}
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/**
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* ID 转为 图片文件路径
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* @param int $pId
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* @return str
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*/
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static function id2path($pId){
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$tPid = str_pad($pId, 9, 0, 0);
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return array(substr($tPid, 0, 3).'/'.substr($tPid, 3, 3).'/', substr($tPid, 6));
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}
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/**
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* 格式化数字
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* @param $pNum
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* @param int $pLen
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* @param int $pRule 规则 0:四舍五入, 1:全入, 2:全舍
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* @return int | float
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*/
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static function format($pNum, $pLen = 2, $pRule = 0){
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# 整数部分
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$pNum = str_replace(array('e','E','+'), '.', $pNum);
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$pNum = floatval($pNum);
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$tInt = intval($pNum);
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# 无小数直接返回
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if(!$tPos = strpos($pNum, '.')) return $tInt;#return $pNum;
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# 小数部分
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$tNum = substr($pNum, $tPos+1);
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# 指定长度
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$tReturn = (float)('0.'.substr($tNum, 0, $pLen));
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# 四舍五入
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if(((0 == $pRule) && (isset($tNum{$pLen}) && ($tNum{$pLen} > 4))) || ((1 == $pRule) && intval(substr($tNum, $pLen)))){
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$tReturn = (float)bcadd($tReturn, (float)('0.'.str_pad('', $pLen-1, 0).'1'), $pLen);
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}
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return bcadd($tInt, $tReturn, $pLen);
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}
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/**
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* 生成key
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* 1 ybex转币
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*/
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static function generate_key($type, $uid, $randstr='Ybc!1900#$@'){
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if(!$type = intval($type)){
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return FALSE;
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}
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$result = '';
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switch($type){
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case 1:
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$result = md5($randstr.$uid.'uid2');
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break;
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default:
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break;
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}
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return $result;
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}
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}
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