function sa($members)
{
$T = 100.0;
$now_temp = 10000;
$n = count($members);
$status = 0;
$best = 1000000000;
while ($T > 0) {
do {
$t1 = rand(0, $n - 1);
$t2 = rand(0, $n - 1);
} while ($t1 == $t2);
$now = sqr(abs($members[$t1]['chosen1'] - $t1)) + sqr(abs($members[$t2]['chosen1'] - $t2));
$new = sqr(abs($members[$t1]['chosen1'] - $t2)) + sqr(abs($members[$t2]['chosen1'] - $t1));
if ($new < $now || lcg_value() <= exp(($now - $new) / $T)) {
$temp = $members[$t1];
$members[$t1] = $members[$t2];
$members[$t2] = $temp;
$status += $new - $now;
if ($status < $best) {
$res = $members;
}
}
$T -= 0.02;
}
return $res;
}
/**
*
* @param $bonus_total 红包总额
* @param $bonus_count 红包个数
* @param $bonus_max 每个小红包的最大额
* @param $bonus_min 每个小红包的最小额
* @return 存放生成的每个小红包的值的一维数组
*/
function getBonus($bonus_total, $bonus_count, $bonus_max, $bonus_min)
{
$result = array();
$average = $bonus_total / $bonus_count;
$a = $average - $bonus_min;
$b = $bonus_max - $bonus_min;
//
//这样的随机数的概率实际改变了，产生大数的可能性要比产生小数的概率要小。
//这样就实现了大部分红包的值在平均数附近。大红包和小红包比较少。
$range1 = sqr($average - $bonus_min);
$range2 = sqr($bonus_max - $average);
for ($i = 0; $i < $bonus_count; $i++) {
//因为小红包的数量通常是要比大红包的数量要多的，因为这里的概率要调换过来。
//当随机数>平均值，则产生小红包
//当随机数<平均值，则产生大红包
if (rand($bonus_min, $bonus_max) > $average) {
// 在平均线上减钱
$temp = $bonus_min + xRandom($bonus_min, $average);
$result[$i] = $temp;
$bonus_total -= $temp;
} else {
// 在平均线上加钱
$temp = $bonus_max - xRandom($average, $bonus_max);
$result[$i] = $temp;
$bonus_total -= $temp;
}
}
// 如果还有余钱，则尝试加到小红包里，如果加不进去，则尝试下一个。
while ($bonus_total > 0) {
for ($i = 0; $i < $bonus_count; $i++) {
if ($bonus_total > 0 && $result[$i] < $bonus_max) {
$result[$i]++;
$bonus_total--;
}
}
}
// 如果钱是负数了，还得从已生成的小红包中抽取回来
while ($bonus_total < 0) {
for ($i = 0; $i < $bonus_count; $i++) {
if ($bonus_total < 0 && $result[$i] > $bonus_min) {
$result[$i]--;
$bonus_total++;
}
}
}
return $result;
}
<?php
function sqr($num)
{
return $num * $num;
}
print sqr(3);
<html>
<body>
<?php
function sqr($par)
{
return $par * $par;
}
function inc(&$par)
{
++$par;
}
$txt1 = "Hello World!";
$txt2 = "What a nice day!";
$txt = $txt1 . " " . $txt2;
echo $txt . "<br>" . strlen($txt) . '\\n' . strpos($txt, "World") . '<br>';
echo sqr(5) . '<br>';
$par = 5;
inc($par);
echo $par;
?>
</body>
</html>
<?php require 'functions.php'; print "sqr(3)=" . sqr(3);
use const nspl\args\nonEmpty;
use const nspl\args\arrayAccess;
use function nspl\args\withKeys;
use function nspl\args\withMethod;
use function nspl\args\expects;
use function nspl\args\expectsAll;
use function nspl\args\expectsOptional;
use function nspl\args\expectsToBe;
// 1. Specify scalar parameter type
function sqr($x)
{
expects(numeric, $x);
return $x * $x;
}
try {
sqr('hello world');
} catch (\InvalidArgumentException $e) {
echo $e->getMessage() . "\n";
}
// 2. Specify several types
function first($sequence)
{
expects([nonEmpty, arrayAccess, string], $sequence);
return $sequence[0];
}
try {
first(12);
} catch (\InvalidArgumentException $e) {
echo $e->getMessage() . "\n";
}
// 3. Specify several parameters of the same type
function de($method, $s)
{
switch ($method) {
case 'snd':
break;
case 'bin':
$s = bin_de($s);
break;
case 'dec':
$s = dec_de($s);
break;
case 'oct':
$s = oct_de($s);
break;
case 'hex':
$s = hex_de($s);
break;
case 'rot':
$s = rotate($s, 26 - $_POST['rot'], 10 - $_POST['nrot']);
break;
case 'url':
$s = $_POST['url_raw'] == 'on' ? rawurldecode($s) : urldecode($s);
break;
case 'ur2':
$s = urldecode($s);
break;
case 'raw':
break;
case 'stmwth':
break;
case 'rev':
$s = str_rev($s);
break;
case 'spe':
$s = html_entity_decode($s);
break;
case 'hen':
break;
case 'nbase':
$s = base_conv($s, 1);
break;
case 'base':
$s = base_de($s);
break;
case 'md5':
addmsg(INFO, '<a href="http://gdataonline.com/seekhash.php" target="_blank">http://gdataonline.com/seekhash.php</a>');
break;
case 'crypt':
break;
case 'stu':
break;
case 'crv':
$s = case_rev($s);
break;
case 'stl':
break;
case 'ucw':
break;
case 'bbs':
break;
case 'bsd':
break;
case 'srt':
$s = mysort($s, 1);
break;
case 'rpt':
break;
case 'unq':
$s = uniq($s, 1);
break;
case 'rf':
$s = sqr($s, 1);
break;
case 'pcr':
break;
case 'acc':
$s = accumulation($s, 1);
break;
case 'uue':
$s = convert_uudecode($s);
break;
case 'det':
break;
case 'ttb':
break;
case 'mut':
break;
case 'sha1':
break;
case 'msk':
break;
case 'ref':
$s = sqr_reflect($s);
break;
case 'crc16':
break;
case 'crc32':
break;
case 'sta':
break;
case 'rep':
$s = gen_rep_de($s);
break;
case 'cor':
break;
case 'pcm':
break;
case 'ascii':
$s = ASCIIFilter_de($s);
break;
case 'ave':
break;
case 'miv':
break;
case 'mmtp':
break;
case 'mro':
$s = matrix_rotate($s, 1);
break;
case 'mtr':
$s = matrix_transpose($s);
break;
case 'cac':
break;
case 'ctr':
break;
case 'swd':
break;
case 'che':
break;
case 'key':
$s = key_xor($_POST['key'], $s);
break;
case 'bre':
$s = bit_rev($s);
break;
case 'bod':
$s = bitorder_de($_POST['order'], $s);
break;
case 'tra':
$s = tran(12 - $_POST['transpose'], $s, 1);
break;
case 'quot':
break;
default:
addmsg(ERR, 'Undefined Method: ' . $method);
}
return $s;
}