1.请求接口的处理函数

/**

* curl访问程序接口

* @param string

* @return array

*/

function getCurlDate($url, $datas, $key) {

$datas['time'] = $_SERVER['REQUEST_TIME'] + 300;

$post_data['post'] = urlencode(authcode(serialize($datas), "ENCODE", $key));

// echo $url;

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// 我们在POST数据哦!

curl_setopt($ch, CURLOPT_POST, 1);

// 把post的变量加上

curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

$output = curl_exec($ch);

// dump(curl_error($ch));

curl_close($ch);

return json_decode($output, true);

}

2.获取文件扩展名

/**

* @获取文件扩展名

* @$pic string 图片路径

*/

function get_file_ext($pic) {

return substr($pic, strrpos($pic, '.') + 1);

}

3.可逆的加密、解密函数

/**

* 字符串加密

* @param $string 需加密的字符

* @param $operation 加密或解密

* @param $key 网站加密key,防止破解

* @return string

*/

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {

$ckey_length = 4;

$key = md5($key ? $key : '^www.itokit.com$');

$keya = md5(substr($key, 0, 16));

$keyb = md5(substr($key, 16, 16));

$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : '';

$cryptkey = $keya . md5($keya . $keyc);

$key_length = strlen($cryptkey);

$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string;

$string_length = strlen($string);

$result = '';

$box = range(0, 255);

$rndkey = array();

for ($i = 0; $i <= 255; $i++) {

$rndkey[$i] = ord($cryptkey[$i % $key_length]);

}

for ($j = $i = 0; $i < 256; $i++) {

$j = ($j + $box[$i] + $rndkey[$i]) % 256;

$tmp = $box[$i];

$box[$i] = $box[$j];

$box[$j] = $tmp;

}

for ($a = $j = $i = 0; $i < $string_length; $i++) {

$a = ($a + 1) % 256;

$j = ($j + $box[$a]) % 256;

$tmp = $box[$a];

$box[$a] = $box[$j];

$box[$j] = $tmp;

$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));

}

if ($operation == 'DECODE') {

if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) – time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) {

return substr($result, 26);

} else {

return '';

}

} else {

return $keyc . str_replace('=', '', base64_encode($result));

}

}

4.字符串转十六进制

/**

* 字符串转十六进制

* @param unknown_type $s

*/

function str2hex($s) {

$r = "";

$hexes = array ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");

for ($i=0; $i<strlen($s); $i++)

$r .= ($hexes [(ord($s{$i}) >> 4)] . $hexes [(ord($s{$i}) & 0xf)]);

return $r;

}

5.十六进制转字符串

/**

* 十六进制转字符串

* @param unknown_type $s

*/

function hex2str($s) {

$r = "";

for ( $i = 0; $i<strlen($s); $i += 2)

{

$x1 = ord($s{$i});

$x1 = ($x1>=48 && $x1<58) ? $x1-48 : $x1-97+10;

$x2 = ord($s{$i+1});

$x2 = ($x2>=48 && $x2<58) ? $x2-48 : $x2-97+10;

$r .= chr((($x1 << 4) & 0xf0) | ($x2 & 0x0f));

}

return $r;

}

6.返回经addslashes处理过的字符串或数组

/**

* 返回经addslashes处理过的字符串或数组

* @param $string 需要处理的字符串或数组

* @return mixed

*/

function new_addslashes($string){

if(!is_array($string)) return addslashes($string);

foreach($string as $key => $val) $string[$key] = new_addslashes($val);

return $string;

}

/**/

function addslashes_deep($string)

{

return is_array($string) ? array_map('addslashes_deep', $string) : addslashes($string);

}

7.返回经stripslashes处理过的字符串或数组

/**

* 返回经stripslashes处理过的字符串或数组

* @param $string 需要处理的字符串或数组

* @return mixed

*/

function new_stripslashes($string) {

if(!is_array($string)) return stripslashes($string);

foreach($string as $key => $val) $string[$key] = new_stripslashes($val);

return $string;

}

/**/

function stripslashes_deep($string)

{

return is_array($string) ? array_map('stripslashes_deep', $string) : stripslashes($string);

}

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