sandyUni

/**
 * test some performance between this and parent
 */
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
/*
$time_start = microtime_float();

sandyUni

*/
/**
 * test memory comsuming
 */

class base1{
    public $a;
    public $b;
    public $c;
    public $d;

sandyUni

#Python 字符串操作（string替换、删除、截取、复制、连接、比较、查找、包含、大小写转换、分割等）   
 
 
#去空格及特殊符号  
s.strip() .lstrip() .rstrip(',')   
 
#复制字符串  
#strcpy(sStr1,sStr)   
sStr= 'strcpy'   
sStr = sStr  

sandyUni

<?php
function getOnlineIp() {  
    $strOnlineIp = "";  
    if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {  
        $onlineip = getenv('HTTP_CLIENT_IP');  
    } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {  
        $onlineip = getenv('HTTP_X_FORWARDED_FOR');  
    } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {  
        $onlineip = getenv('REMOTE_ADDR');  
    } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {  

sandyUni

<?php
function delTags($str)  
{  
    $farr = array(  
    "/<(\/?)(script|i?frame|style|html|body|title|link|meta|form|input|embed|object|textarea|\?|\%)([^>]*?)>/isU",  
    "/(<[^>]*)on[a-zA-Z]+\s*=([^>]*>)/isU"  
    );  
    $tarr = array(  
    "",  
    ""  

sandyUni

<?php
function getStrTruncate($string, $length = 80, $etc = ''){  
    if ($length == 0) return '';  
    mb_internal_encoding("UTF-8");  
  
    $string = str_replace("\n","",$string);  
    $strlen = mb_strwidth($string);  
    if ($strlen > $length) {  
        $etclen = mb_strwidth($etc);  
        $length = $length - $etclen;  

sandyUni

close all 
clear all
% for n=1:10:10000
fsample=1424424;
f=fsample/1020.32;
A=1;

lens=2^20;
N=15;

sandyUni

function [ theta ] = direction( p1,p2 )
% direction of nodes p1 and p2. Support 2D and 3D, return the angle from p2 to p1
% In 2D case, theta will be a scaler indicates the angle from p2 to p1, which ranges from -pi~pi;
% In 3D case theta will be a vector, theta(1) is azimuthal angle (-pi~ pi)  and theta(2) is altitude angle(-pi/2~pi/2)
if(length(p1)==2)
    v  =  p1-p2;
    theta =  atan(v(2)/v(1));
    if(v(1)<0)
        if(v(2)<0)
            theta = theta- pi;

sandyUni

function [X,Y,Z] = polarToCartesian(R,logi,lanti)
% convert polar coordinate to Cartesian 
% R, logi(-pi~pi), lanti (-1/2*pi~1/2*pi) are Radius,longitude, lantitude

Z  = R* sin(lanti);

Y  = R* cos(lanti) *sin(logi);

X  = R*cos(lanti) *cos(logi);

sandyUni

function [ indx ] = resampleSystematic(w,N)
Q = cumsum(w);

T = linspace(0,1-1/N,N) + rand(1)/N;
T(N+1) = 1;

i=1;
j=1;

indx = zeros(N,1);