Common PHP function code snippets that can be used directly (1 ~ 5)

Common PHP function code snippets that can be used directly (1 ~ 5) Source: jquery tutorial? -? Http://www.jq-school.com/Show.aspx? Id = 322 I have previously shared 100 common native JavaScript code snippets. now I am free to start collecting common PHP functional code snippets that P can use directly (1 ~ 5)

Source: jquery tutorial? -? Http://www.jq-school.com/Show.aspx? Id = 322

I have already shared it.100 common native JavaScript code snippetsNow, I am free to collect PHP functional code snippets and share them with you.JqueryMembers of the school group andPHPDeveloped netizens improve the development efficiency. due to the long code, every 5 commonly used code snippets are collected into an article for sharing. The following is the first article.

1. PHP implements real-time website

Turn to PHP to implement real-time website functions

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2. PHP converts Chinese characters to integer numbers, for example, one hundred and one to 101

Test ();/*** test */function test () {echo CnToInt ('1'); // 1 echo CnToInt ('10 '); // 10 echo CnToInt ('11'); // 11 echo CnToInt ('20140901'); // One hundred and ten echo CnToInt ('20160901 '); // 1001 echo CnToInt ('20140901'); // ten thousand one hundred and one echo CnToInt ('20140901'); // 10101 echo CnToInt ('20160901 '); // 11.0E + 15}/*** convert Chinese to NUMBERS * @ param String $ var the number of Chinese characters to be parsed * @ param Int $ start initial value * @ return int */function CnToInt ($ var, $ start = 0) {I F (is_numeric ($ var) {return $ var;} if (intval ($ var) === 0) {$ splits = array (' '=> 100000000, 'wan' => 10000); $ chars = array ('wan' => 10000, 'kilobytes => 1000, 'bai' => 100, '10' => 10, '1' => 1, '0' => 0); $ Ints = array ('0' => 0, '1' => 1, '2' => 2, '3' => 3, '4' => 4, '5' => 5, '6' => 6, '7' => 7, '8' => 8, '9' => 9, '10' => 10 ); $ var = str_replace ('0', "", $ var); foreach ($ splits as $ key => $ step) {if (Strpos ($ var, $ key) {$ strs = explode ($ key, $ var); $ start + = CnToInt (array_shift ($ strs) * $ step; $ var = join ('', $ strs) ;}} foreach ($ chars as $ key =>$ step) {if (strpos ($ var, $ key )! = FALSE) {$ vs = explode ($ key, $ var); if ($ vs [0] = "") {$ vs [0] = '1';} $ start + = $ Ints [array_shift ($ vs)] * $ step; $ var = join ('', $ vs);} elseif (mb_strlen ($ var, 'utf-8') ===1) {$ start + = $ Ints [$ var]; $ var = ''; break;} return $ start;} else {return intval ($ var );}}

3. PHP implements simple symmetric encryption and decryption methods

/*** Common encryption ** @ param String $ string the String to be encrypted * @ param String $ skey encrypt EKY * @ return string */function enCode ($ String = '', $ skey = 'echounion ') {$ skey = array_reverse (str_split ($ skey); $ strArr = str_split (base64_encode ($ string )); $ strCount = count ($ strArr); foreach ($ skey as $ key = >$ value) {$ key <$ strCount & $ strArr [$ key]. = $ value;} return str_replace ('=', 'o0o0o', join ('', $ strArr ));} /*** common decryption ** @ param String $ string the String to be decrypted * @ param String $ skey decryption KEY * @ return string */function deCode ($ String = '', $ skey = 'echounion ') {$ skey = array_reverse (str_split ($ skey); $ strArr = str_split (str_replace ('0o0o',' = ', $ string ), 2); $ strCount = count ($ strArr); foreach ($ skey as $ key => $ value) {$ key <$ strCount & $ strArr [$ key] = rtrim ($ strArr [$ key], $ value);} return base64_decode (join ('', $ strArr ));}

4. PHP converts numbers to letters to generate Excel column labels

/*** Convert a number to a letter (similar to an Excel column) * @ param Int $ index value * @ param Int $ start value * @ return String returns the letter */function IntToChr ($ index, $ start = 65) {$ str = ''; if (floor ($ index/26)> 0) {$ str. = IntToChr (floor ($ index/26)-1);} return $ str. chr ($ index % 26 + $ start);}/*** test */function test () {echo IntToChr (0); // # Aecho IntToChr (1 ); // # B //... echo IntToChr (27); // # AB}

5. PHP calculates the length of time between two timestamps.

/*** Returns the time difference between two times, * minute * Second * @ param int $ one_time 1 * @ param int $ two_time 2 * @ param int $ return_type default value: 0, 0/not if the value is 0, splicing returns, 1/* second, 2/* minute * second, 3/* hour * minute * second/, 4/* Day * hour * minute * second, 5/* month * Day * hour * minute * second, 6/* YEAR * month * Day * hour * minute * Second * @ param array $ format_array formatted character, for example, array (year, month, day, hour, minute, second ') * @ return String or false */public function getRemainderTime ($ one_time, $ two_time, $ return_type = 0, $ format_array = array ('year', 'month', 'day ', 'Time ', 'Minute', 'second ') {if ($ return_type <0 | $ return_type> 6) {return false;} if (! (Is_int ($ one_time) & is_int ($ two_time) {return false;} $ remainder_seconds = abs ($ one_time-$ two_time); // year $ years = 0; if ($ return_type = 0 | $ return_type = 6) & $ remainder_seconds-31536000> 0) {$ years = floor ($ remainder_seconds/(31536000 ));} // month $ monthes = 0; if ($ return_type = 0 | $ return_type> = 5) & $ remainder_seconds-$ years * 31536000-2592000> 0) {$ monthes = floor ($ remainder_seconds-$ years * 31536000)/(2592000);} // day $ days = 0; if ($ return_type = 0 | $ return_type> = 4) & $ remainder_seconds-$ years * 31536000-$ monthes * 2592000-86400> 0) {$ days = floor ($ remainder_seconds-$ years * 31536000-$ monthes * 2592000)/(86400);} // hour $ hours = 0; if ($ return_type = 0 | $ return_type> = 3) & $ remainder_seconds-$ years * 31536000-$ monthes * 2592000-$ days * 86400-3600> 0) {$ hours = floor ($ remainder_seconds-$ years * 31536000-$ monthes * 2592000-$ days * 86400)/3600);} // minute $ minutes = 0; if ($ return_type = 0 | $ return_type> = 2) & $ remainder_seconds-$ years * 31536000-$ monthes * 2592000-$ days * 86400-$ hours * 3600-60> 0) {$ minutes = floor ($ remainder_seconds-$ years * 31536000-$ monthes * 2592000-$ days * 86400-$ hours * 3600)/60 );} // second $ seconds = $ remainder_seconds-$ years * 31536000-$ monthes * 2592000-$ days * 86400-$ hours * 3600-$ minutes * 60; $ return = false; switch ($ return_type) {case 0: if ($ years> 0) {$ return = $ years. $ format_array [0]. $ monthes. $ format_array [1]. $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5];} else if ($ monthes> 0) {$ return = $ monthes. $ format_array [1]. $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5];} else if ($ days> 0) {$ return = $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5];} else if ($ hours> 0) {$ return = $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5];} else if ($ minutes> 0) {$ return = $ minutes. $ format_array [4]. $ seconds. $ format_array [5];} else {$ return = $ seconds. $ format_array [5];} break; case 1: $ return = $ seconds. $ format_array [5]; break; case 2: $ return = $ minutes. $ format_array [4]. $ seconds. $ format_array [5]; break; case 3: $ return = $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5]; break; case 4: $ return = $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5]; break; case 5: $ return = $ monthes. $ format_array [1]. $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5]; break; case 6: $ return = $ years. $ format_array [0]. $ monthes. $ format_array [1]. $ days. $ format_array [2]. $ hours. $ format_array [3]. $ minutes. $ format_array [4]. $ seconds. $ format_array [5]; break; default: $ return = false;} return $ return ;}

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