PHP Development-callback-readdir-is_dir-foreach-glob-PhpStorm

* ** Test the folder command and copy the installation directory of a program to the project * traverse all directories and files in the specified directory * readdir () the function returns the file name * is_dir () of the next file in the directory to determine whether the given file name is a directory * readdir print result :. the current directory * readdir prints the result :.. top directory * PHP Development (17)-callback-readdir-is_dir-foreach-glob-PhpStorm

 "; Call_user_func_array (" fun ", array (123,321); // print the result: 123,321, 3 call_user_func_array (" fun ", array (123,321,444,555); // print the result: 123,321,444 function fun ($ one = "1", $ two = "2", $ three = "3") {echo "$ one, $ two, $ three
";}/*** Number of excluded replies * number of replies: in N digits, the 1st digits are the same as the last N digits * strrev reverse string */echo" ---------- callback Demo 2 ----------
"; Demo (25," test "); // print the result: 10 12 13 14 15 16 17 18 19 20 21 23 24 // that is, the number of replies is not printed: 0 1 2 3 4 5 6 7 8 9 11 22 echo"
"; Function demo ($ num, $ n) {for ($ I = 0; $ I <$ num; $ I ++) {if (call_user_func_array ($ n, array ($ I) continue; echo $ I. "" ;}} function test ($ I) {if ($ I = strrev ($ I) return true; else return false ;} /*****/echo "---------- callback Demo 3 ----------
"; // $ Filter = new Filter (); // instantiate Filter // $ filter-> one (1); // call one function in the Filter class // Filter:: two (1); // call the two static function in the Filter class. // use the one function to exclude the integer multiple demo (25, array (new Filter (), "one"); // print the result: 1 2 4 5 7 8 10 11 13 14 16 19 20 22 23 echo"
"; // Static functions two exclude all numeric demos containing string 3 (25, array (" Filter "," two "); // print the result: 0 1 2 4 5 6 7 8 9 10 11 12 15 16 17 18 19 20 21 22 24 echo"
"; Class Filter {function one ($ I) {if ($ I % 3 = 0) {return true;} else {return false ;}} static function two ($ I) {if (preg_match ('/3/', $ I) {return true ;}else {return false ;}}} /*** test the folder command to copy the installation directory of a program to the project * traverse all directories and files in the specified directory * readdir () the function returns the file name * is_dir () of the next file in the directory to determine whether the given file name is a directory * readdir print result :. the current directory * readdir prints the result :.. upper-level directory */echo "---------- opendir ----------
"; $ Dirname ="./demoFile2 "; // open the directory resource $ dir = opendir ($ dirname); // read the echo readdir ($ dir ).'
'; Echo readdir ($ dir ).'
'; Echo readdir ($ dir ).'
'; While ($ file = readdir ($ dir) {$ file = $ dirname. "/". $ file; if (is_dir ($ file) {echo "Directory:" ;}else {echo "file:" ;}echo $ file.'
';} // Close the directory resource closedir ($ dir);/*** test the folder command, copy the installation directory of a program to the project * traverse all directories and files (including subdirectories) in the specified directory) * glob returns the file name or directory matching the specified mode * glob returns an array containing matching files/directories * foreach syntax structure provides a simple way to traverse arrays * foreach (array_expression as $ value) in each loop, the value of the current unit is assigned to $ value and the pointer inside the array moves forward step * (so the next unit will be obtained in the next loop) */echo "---------- opendir2 ----------
"; // FetchDir (" demoFile1 "); function fetchDir ($ dir) {foreach (glob ($ dir. '\ *') as $ file) {echo $ file .'
', "\ N"; if (is_dir ($ file) {fetchDir ($ file) ;}} fetchDir2 ("demoFile1"); function fetchDir2 ($ dir) {foreach (glob ($ dir. '\ *') as $ file) {if (is_dir ($ file) {echo "Directory :". $ file.'
', "\ N"; fetchDir2 ($ file);} else {echo "file:". $ file .'
', "\ N ";}}}

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