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PHP通用代码

时间:2021-07-01 10:21:17 帮助过:21人阅读

一个是curl的post请求函数,主要用于各平台api开发,进行请求接口的处理函数,如果你有多个平台,互相之间要传递数据,用这个函数绝对好用:

PHP Code 复制内容到剪贴板

  1. /**
  2. * curl访问程序接口
  3. * @param string
  4. * @return array
  5. */
  6. function getCurlDate($url, $datas, $key) {
  7. $datas['time'] = $_SERVER['REQUEST_TIME'] + 300;
  8. $post_data['post'] = urlencode(authcode(serialize($datas), "ENCODE", $key));
  9. // echo $url;
  10. $ch = curl_init();
  11. curl_setopt($ch, CURLOPT_URL, $url);
  12. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  13. // 我们在POST数据哦!
  14. curl_setopt($ch, CURLOPT_POST, 1);
  15. // 把post的变量加上
  16. curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
  17. $output = curl_exec($ch);
  18. // dump(curl_error($ch));
  19. curl_close($ch);
  20. return json_decode($output, true);
  21. }

php获取文件的扩展名:

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  1. /**
  2. * @获取文件扩展名
  3. * @$pic string 图片路径
  4. */
  5. function get_file_ext($pic) {
  6. return substr($pic, strrpos($pic, '.') + 1);
  7. }

还有一个是可逆的加密、解密函数(加密相同的字符串都会加密成不同的字符串的,非常好用)

PHP Code 复制内容到剪贴板

  1. /**
  2. * 字符串加密
  3. * @param $string 需加密的字符
  4. * @param $operation 加密或解密
  5. * @param $key 网站加密key,防止破解
  6. * @return string
  7. */
  8. function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {
  9. $ckey_length = 4;
  10. $key = md5($key ? $key : '^www.itokit.com$');
  11. $keya = md5(substr($key, 0, 16));
  12. $keyb = md5(substr($key, 16, 16));
  13. $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length) : substr(md5(microtime()), -$ckey_length)) : '';
  14. $cryptkey = $keya . md5($keya . $keyc);
  15. $key_length = strlen($cryptkey);
  16. $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0) . substr(md5($string . $keyb), 0, 16) . $string;
  17. $string_length = strlen($string);
  18. $result = '';
  19. $box = range(0, 255);
  20. $rndkey = array();
  21. for ($i = 0; $i <= 255; $i++) {
  22. $rndkey[$i] = ord($cryptkey[$i % $key_length]);
  23. }
  24. for ($j = $i = 0; $i < 256; $i++) {
  25. $j = ($j + $box[$i] + $rndkey[$i]) % 256;
  26. $tmp = $box[$i];
  27. $box[$i] = $box[$j];
  28. $box[$j] = $tmp;
  29. }
  30. for ($a = $j = $i = 0; $i < $string_length; $i++) {
  31. $a = ($a + 1) % 256;
  32. $j = ($j + $box[$a]) % 256;
  33. $tmp = $box[$a];
  34. $box[$a] = $box[$j];
  35. $box[$j] = $tmp;
  36. $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
  37. }
  38. if ($operation == 'DECODE') {
  39. if ((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26) . $keyb), 0, 16)) {
  40. return substr($result, 26);
  41. } else {
  42. return '';
  43. }
  44. } else {
  45. return $keyc . str_replace('=', '', base64_encode($result));
  46. }
  47. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 字符串转十六进制
  3. * @param unknown_type $s
  4. */
  5. function str2hex($s) {
  6. $r = "";
  7. $hexes = array ("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f");
  8. for ($i=0; $i
  9. $r .= ($hexes [(ord($s{$i}) >> 4)] . $hexes [(ord($s{$i}) & 0xf)]);
  10. return $r;
  11. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 十六进制转字符串
  3. * @param unknown_type $s
  4. */
  5. function hex2str($s) {
  6. $r = "";
  7. for ( $i = 0; $i
  8. {
  9. $x1 = ord($s{$i});
  10. $x1 = ($x1>=48 && $x1<58) ? $x1-48 : $x1-97+10;
  11. $x2 = ord($s{$i+1});
  12. $x2 = ($x2>=48 && $x2<58) ? $x2-48 : $x2-97+10;
  13. $r .= chr((($x1 << 4) & 0xf0) | ($x2 & 0x0f));
  14. }
  15. return $r;
  16. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 返回经addslashes处理过的字符串或数组
  3. * @param $string 需要处理的字符串或数组
  4. * @return mixed
  5. */
  6. function new_addslashes($string){
  7. if(!is_array($string)) return addslashes($string);
  8. foreach($string as $key => $val) $string[$key] = new_addslashes($val);
  9. return $string;
  10. }
  11. /**/
  12. function addslashes_deep($string)
  13. {
  14. return is_array($string) ? array_map('addslashes_deep', $string) : addslashes($string);
  15. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 返回经stripslashes处理过的字符串或数组
  3. * @param $string 需要处理的字符串或数组
  4. * @return mixed
  5. */
  6. function new_stripslashes($string) {
  7. if(!is_array($string)) return stripslashes($string);
  8. foreach($string as $key => $val) $string[$key] = new_stripslashes($val);
  9. return $string;
  10. }
  11. /**/
  12. function stripslashes_deep($string)
  13. {
  14. return is_array($string) ? array_map('stripslashes_deep', $string) : stripslashes($string);
  15. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 返回经 htmlspecialchars 处理过的字符串或数组
  3. * @param $string 需要处理的字符串或数组
  4. * @return mixed
  5. */
  6. function new_html_special_chars($string) {
  7. if(!is_array($string)) return htmlspecialchars($string);
  8. foreach($string as $key => $val) $string[$key] = new_html_special_chars($val);
  9. return $string;
  10. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 获取请求ip
  3. *
  4. * @return ip地址
  5. */
  6. function ip() {
  7. if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
  8. $ip = getenv('HTTP_CLIENT_IP');
  9. } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
  10. $ip = getenv('HTTP_X_FORWARDED_FOR');
  11. } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
  12. $ip = getenv('REMOTE_ADDR');
  13. } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
  14. $ip = $_SERVER['REMOTE_ADDR'];
  15. }
  16. return preg_match ( '/[\d\.]{7,15}/', $ip, $matches ) ? $matches [0] : '';
  17. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 字符截取 支持UTF8/GBK
  3. * @param $string
  4. * @param $length
  5. * @param $dot
  6. */
  7. function str_cut($string, $length, $dot = '...') {
  8. $strlen = strlen($string);
  9. if($strlen <= $length) return $string;
  10. $string = str_replace(array(' ',' ', '&', '"', ''', '“', '”', '?', '<', '>', '·', '…'), array('∵',' ', '&', '"', "'", '“', '”', '?', '<', '>', '·', '…'), $string);
  11. $strcut = '';
  12. if(strtolower(CHARSET) == 'utf-8') {
  13. $length = intval($length-strlen($dot)-$length/3);
  14. $n = $tn = $noc = 0;
  15. while($n < strlen($string)) {
  16. $t = ord($string[$n]);
  17. if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
  18. $tn = 1; $n++; $noc++;
  19. } elseif(194 <= $t && $t <= 223) {
  20. $tn = 2; $n += 2; $noc += 2;
  21. } elseif(224 <= $t && $t <= 239) {
  22. $tn = 3; $n += 3; $noc += 2;
  23. } elseif(240 <= $t && $t <= 247) {
  24. $tn = 4; $n += 4; $noc += 2;
  25. } elseif(248 <= $t && $t <= 251) {
  26. $tn = 5; $n += 5; $noc += 2;
  27. } elseif($t == 252 || $t == 253) {
  28. $tn = 6; $n += 6; $noc += 2;
  29. } else {
  30. $n++;
  31. }
  32. if($noc >= $length) {
  33. break;
  34. }
  35. }
  36. if($noc > $length) {
  37. $n -= $tn;
  38. }
  39. $strcut = substr($string, 0, $n);
  40. $strcut = str_replace(array('∵', '&', '"', "'", '“', '”', '?', '<', '>', '·', '…'), array(' ', '&', '"', ''', '“', '”', '?', '<', '>', '·', '…'), $strcut);
  41. } else {
  42. $dotlen = strlen($dot);
  43. $maxi = $length - $dotlen - 1;
  44. $current_str = '';
  45. $search_arr = array('&',' ', '"', "'", '“', '”', '?', '<', '>', '·', '…','∵');
  46. $replace_arr = array('&',' ', '"', ''', '“', '”', '?', '<', '>', '·', '…',' ');
  47. $search_flip = array_flip($search_arr);
  48. for ($i = 0; $i < $maxi; $i++) {
  49. $current_str = ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];
  50. if (in_array($current_str, $search_arr)) {
  51. $key = $search_flip[$current_str];
  52. $current_str = str_replace($search_arr[$key], $replace_arr[$key], $current_str);
  53. }
  54. $strcut .= $current_str;
  55. }
  56. }
  57. return $strcut.$dot;
  58. }

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  1. /**
  2. * 产生随机字符串
  3. *
  4. * @param int $length 输出长度
  5. * @param string $chars 可选的 ,默认为 0123456789
  6. * @return string 字符串
  7. */
  8. function random($length, $chars = '0123456789') {
  9. $hash = '';
  10. $max = strlen($chars) - 1;
  11. for($i = 0; $i < $length; $i++) {
  12. $hash .= $chars[mt_rand(0, $max)];
  13. }
  14. return $hash;
  15. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 将字符串转换为数组
  3. *
  4. * @param string $data 字符串
  5. * @return array 返回数组格式,如果,data为空,则返回空数组
  6. */
  7. function string2array($data) {
  8. if($data == '') return array();
  9. eval("\$array = $data;");
  10. return $array;
  11. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 将数组转换为字符串
  3. *
  4. * @param array $data 数组
  5. * @param bool $isformdata 如果为0,则不使用new_stripslashes处理,可选参数,默认为1
  6. * @return string 返回字符串,如果,data为空,则返回空
  7. */
  8. function array2string($data, $isformdata = 1) {
  9. if($data == '') return '';
  10. if($isformdata) $data = new_stripslashes($data);
  11. return addslashes(var_export($data, TRUE));
  12. }

PHP Code 复制内容到剪贴板

  1. /**
  2. * 转换字节数为其他单位
  3. *
  4. *
  5. * @param string $filesize 字节大小
  6. * @return string 返回大小
  7. */
  8. function sizecount($filesize) {
  9. if ($filesize >= 1073741824) {
  10. $filesize = round($filesize / 1073741824 * 100) / 100 .' GB';
  11. } elseif ($filesize >= 1048576) {
  12. $filesize = round($filesize / 1048576 * 100) / 100 .' MB';
  13. } elseif($filesize >= 1024) {
  14. $filesize = round($filesize / 1024 * 100) / 100 . ' KB';
  15. } else {
  16. $filesize = $filesize.' Bytes';
  17. }
  18. return $filesize;
  19. }

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