PHP Common Code

One is the POST request function of curl, is mainly used for the development of Platform API, the processing function of the request interface, if you have multiple platforms, to pass data between each other, use this function absolutely useful:

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1. /**
2. * Curl Access Program Interface
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. We're in post data Oh!
14. curl_setopt ($ch, Curlopt_post, 1);
15. Add the post variable to the
16. curl_setopt ($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 Gets the file extension:

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1. /**
2. * @ Get file name extension
3. * @ $pic String picture path
4. */
5. function Get_file_ext ($pic) {
6. Return substr ($pic, Strrpos ($pic, '. ') + 1);
7. }

There is also a reversible encryption, decryption function (encryption of the same string will be encrypted into a different string, very useful)

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2. /**
4. * String Encryption
6. * @param $string characters that need to be encrypted
8. * @param $operation encryption or decryption
10. * @param $key website encryption key, prevent crack
12. * @return String
14. */
16. function Authcode ($string, $operation = ' DECODE ', $key = ", $expiry = 0) {
18. $ckey _length = 4;
20. $key = MD5 ($key? $key: ' ^www.itokit.com$ ');
22. $keya = MD5 (substr ($key, 0, 16));
24. $KEYB = MD5 (substr ($key, 16, 16));
26. $KEYC = $ckey _length? ($operation = = ' DECODE '? substr ($string, 0, $ckey _length): substr (MD5 (Microtime ()),-$ckey _length)): ";
30. $cryptkey = $keya. MD5 ($keya. $KEYC);
32. $key _length = strlen ($cryptkey);
36. $string = $operation = = = ' DECODE '? Base64_decode (substr ($string, $ckey _length)): sprintf ('%010d ', $expiry? $expiry + Time (): 0). SUBSTR (MD5 ($string. $keyb), 0, 16). $string;
38. $string _length = strlen ($string);
42. $result = ";
44. $box = Range (0, 255);
48. $rndkey = Array ();
50. for ($i = 0; $i <= 255; $i + +) {
52. $rndkey [$i] = Ord ($cryptkey [$i% $key _length]);
54. }
58. for ($j = $i = 0; $i < $i + +) {
60. $j = ($j + $box [$i] + $rndkey [$i])% 256;
62. $tmp = $box [$i];
64. $box [$i] = $box [$j];
66. $box [$j] = $tmp;
68. }
72. for ($a = $j = $i = 0; $i < $string _length; $i + +) {
74. $a = ($a + 1)% 256;
76. $j = ($j + $box [$a])% 256;
78. $tmp = $box [$a];
80. $box [$a] = $box [$j];
82. $box [$j] = $tmp;
84. $result. = Chr (ord ($string [$i]) ^ ($box [($box [$a] + $box [$j])% 256]));
86. }
90. if ($operation = = ' DECODE ') {
92. if (substr ($result, 0, 0) = = 0 | | substr ($result,, Ten)-time () > 0) && substr ($result, ten, +) = = substr (M D5 (substr ($result,). $keyb), 0, 16) {
94. Return substr ($result, 26);
96. } else {
98. Return ';
100. }
102. } else {
104. Return $KEYC. Str_replace (' = ', ' ', Base64_encode ($result));
106. }
108. }

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1. /**
2. * String goto Hex
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 < li="">
9. $r. = ($hexes [(Ord ($s {$i}) >> 4)]. $hexes [(Ord ($s {$i}) & 0xf)]);
10. return $r;
11. }

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1. /**
2. * Hexadecimal to String
3. * @param Unknown_type $s
4. */
5. function Hex2str ($s) {
6. $r = "";
7. for ($i = 0; $i < li="">
8. {
9. $x 1 = Ord ($s {$i});
10. $x 1 = ($x 1>=48 && $x 1<58)? $x 1-48: $x 1-97+10;
11. $x 2 = Ord ($s {$i +1});
12. $x 2 = ($x 2>=48 && $x 2<58)? $x 2-48: $x 2-97+10;
13. $r. = Chr ((($x 1 << 4) & 0xf0) | ($x 2 & 0x0f));
14. }
15. return $r;
16. }

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1. /**
2. * Returns a string or array that has been processed by addslashes
3. * @param $string string or array to be processed
4. * @return Mixed
5. */
6. function New_addslashes ($string) {
7. if (!is_array ($string)) return addslashes ($string);
8. foreach ($string as $key = + $val) $string [$key] = new_addslashes ($val);
9. return $string;
10. }
12. /**/
13. function Addslashes_deep ($string)
14. {
15. Return Is_array ($string)? Array_map (' Addslashes_deep ', $string): Addslashes ($string);
16. }

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1. /**
2. * Returns a string or array that has been processed by stripslashes
3. * @param $string string or array to be processed
4. * @return Mixed
5. */
6. function New_stripslashes ($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. }

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1. /**
2. * Returns a string or array that has been processed by Htmlspecialchars
3. * @param $string string or array to be processed
4. * @return Mixed
5. */
6. function New_html_special_chars ($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. }

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1. /**
2. * GET request IP
3. *
4. * @return IP Address
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. }

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2. /**
4. * Character interception support UTF8/GBK
6. * @param $string
8. * @param $length
10. * @param $dot
12. */
14. function Str_cut ($string, $length, $dot = ' ... ') {
16. $strlen = strlen ($string);
18. if ($strlen <= $length) return $string;
20. $string = Str_replace (', ', ' & ', ' ' ', ' ' ', ' ' ', ' ' ' ', ' ' ', ' ' < ', ' > ', ' * ', ' ... '), Array (' ∵ ', ', ' & ', ' ' ', ' ' ' ', ' ' ', ' ' ', '? ', ' < ', ' > ', ' ' ', ' ' ... '), $string);
22. $strcut = ";
24. if (Strtolower (CHARSET) = = ' Utf-8 ') {
26. $length = Intval ($length-strlen ($DOT)-$length/3);
28. $n = $tn = $noc = 0;
30. while ($n < strlen ($string)) {
32. $t = Ord ($string [$n]);
34. if ($t = = 9 | | $t = = 10 | | (<= $t && $t <= 126)) {
36. $tn = 1; $n + +; $noc + +;
38. } elseif (194 <= $t && $t <= 223) {
40. $tn = 2; $n + = 2; $noc + = 2;
42. } elseif (224 <= $t && $t <= 239) {
44. $tn = 3; $n + = 3; $noc + = 2;
46. } elseif (<= $t && $t <= 247) {
48. $tn = 4; $n + = 4; $noc + = 2;
50. } elseif (248 <= $t && $t <= 251) {
52. $tn = 5; $n + = 5; $noc + = 2;
54. } elseif ($t = = 252 | | $t = = 253) {
56. $tn = 6; $n + = 6; $noc + = 2;
58. } else {
60. $n + +;
62. }
64. if ($noc >= $length) {
66. Break
68. }
70. }
72. if ($noc > $length) {
74. $n-= $tn;
76. }
78. $strcut = substr ($string, 0, $n);
80. $strcut = Str_replace (' ∵ ', ' & ', ' ' ', ' ' ', ' ' ', ' ' ', ' ' ', ' < ', ' > ', ' * ', ' ... '), Array (', ' & ', ' "', ') , ' ' ', ' ' ' ', ' '? ', ' < ', ' > ', ' ' ', ' ... '), $strcut);
82. } else {
84. $dotlen = strlen ($dot);
86. $maxi = $length-$dotlen-1;
88. $current _str = ";
90. $search _arr = Array (' & ', ' ', ' ' ' ', ' ' ', ' ' ', ' ' ', ' ' ' ' ' ' ' ' ', ' ' ', ' ', ' ' < ', ' > ', ' * ', ' ... ', ' ∵ ');
92. $replace _arr = Array (' & ', ' ', ' ' ' ', ' ' ', ' ' ', ' ' ', ' ' ' ' ' ' ' ' ' ' ', ' ' ', ' ' < ', ' > ', ' * ', ' ... ', ');
94. $search _flip = Array_flip ($search _arr);
96. for ($i = 0; $i < $maxi; $i + +) {
98. $current _str = Ord ($string [$i]) > 127? $string [$i]. $string [+ + $i]: $string [$i];
100. if (In_array ($current _str, $search _arr)) {
102. $key = $search _flip[$current _str];
104. $current _str = str_replace ($search _arr[$key], $replace _arr[$key], $current _str);
106. }
108. $strcut. = $current _str;
110. }
112. }
114. return $strcut. $dot;
116. }

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1. /**
2. * Generate random string
3. *
4. * @param int $length output length
5. * @param string $chars Optional, default is 0123456789
6. * @return String string
7. */
8. function random ($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. }

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1. /**
2. * Convert string to array
3. *
4. * @param string $data strings
5. * @return Array format is returned, if data is empty, an empty array is returned
6. */
7. function String2array ($data) {
8. if ($data = = ") return array ();
9. Eval ("\ $array = $data;");
10. return $array;
11. }

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1. /**
2. * Convert an array to a string
3. *
4. * @param array $data arrays
5. * @param bool $isformdata If 0, do not use new_stripslashes processing, optional parameter, default is 1
6. * @return string is returned, if data is empty, NULL is returned
7. */
8. function array2string ($data, $isformdata = 1) {
9. if ($data = = ") return";
10. if ($isformdata) $data = New_stripslashes ($data);
11. Return Addslashes (Var_export ($data, TRUE));
12. }

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1. /**
2. * Convert bytes to other units
3. *
4. *
5. * @param string $filesize byte size
6. * @return String return size
7. */
8. function Sizecount ($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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