Php Command Line programming example

There are two constants in the command line. stdout and stdin represent the standard output and the standard input respectively. They are used to implement the interaction of the command line. #! /Usr/bin/PHP-q <? PHP/*** php Command Line writing Introduction * @ author rains rains31@gmail.com * @ copyright http://rains.cn * // how to judge Program Is it running in command line mode? // The simplest method is: $ _ server ['request _ method'] in the command line program is null. // For Web requests, the post or get method is generally used, while the command line does not have a request method. Define ('user _ dir ','. /data'); If (empty ($ _ server ['request _ method']) {// obtain the command line parameters, is an array $ ARGs = $ _ server ['argv']; If (isset ($ _ server ['_']) & basename ($ _ server ['_'])! = 'Php') {$ cmd = $ _ server ['_'];} else { $ Cmd = 'php '. array_shift ($ ARGs);}/*** obtain the option parameter */$ option = array_shift ($ ARGs); Switch ($ option) {Case '': case '-H': Case' -- help': $ MSG. = "Usage: \ t $ cmd option [ID] \ r \ n \ tavailable options: \ r \ n"; $ MSG. = "\ t-h \ tshow this help. \ r \ n "; $ MSG. = "\ t-A \ Tadd user \ r \ n"; $ MSG. = "\ t-D name \ tdelete user \ r \ n"; $ MSG. = "\ t-P name \ tmodify password \ r \ n"; $ MSG. = "\ t-L \ tlist all users. \ r \ n "; break; Case '-a': $ name = Read_name (); $ pass = read_pass (); $ MSG = save_user (Array ('name' => $ name, 'pass' => $ pass); break; case '-d': $ name = array_shift ($ ARGs); $ MSG = del_user ($ name); break; Case'-P ': $ name = array_shift ($ ARGs); $ MSG = modify_user ($ name); break; Case '-l': $ files = glob (user_dir. '/*. dat '); foreach ($ files as $ file) {$ MSG. = basename ($ file ,'. dat '). "\ r \ n";} $ MSG. = count ($ files ). "user (s) \ r \ n"; break; default: $ MSG = "inv Alid option '$ option', please try '-H' for instructions. \ r \ n "; break;} fwrite (stdout, $ MSG); exit;} function read_name () {$ MSG = 'plese input your prefered name (1-16 chars, 0-9 A-Z A-Z _ and-): '; fwrite (stdout, $ MSG ); while (preg_match ('/^ [-_ 0-9a-za-z] {1, 16} $/', ($ name = trim (fgets (stdin, 16), $ matches) = false) {fwrite (stdout, "invalid name! \ R \ n ". $ MSG);} return trim ($ name ); } Function read_pass () {$ MSG = "Please set your password (1-16 chars):"; fwrite (stdout, $ MSG ); while ($ pass = trim (fgets (stdin, 16) = '') {fwrite (stdout," invalid password! \ R \ n ". $ MSG);} return trim ($ pass);} function save_user ($ Param = array ()) {if ($ Param ['name'] = ''| $ Param ['pass'] ='') {$ MSG = 'user name or password is empty! ';} $ User_data = user_dir. '/'. $ Param ['name']. '. dat '; If (file_exists ($ user_data) {$ MSG = "sorry, user {$ Param ['name']} already exists! ";} Else {$ fp = fopen ($ user_data, 'w'); If (! $ FP) {$ MSG = "Sorry, some error occurred while writing user data. ";} else {If (fwrite ($ FP, MD5 ($ Param ['pass']) {$ MSG =" Congratulations! User {$ Param ['name']} has been accepted. ";} else {$ MSG =" Sorry, some error occurred while writing user data. ";}} fclose ($ FP);} return $ MSG;} function del_user ($ name) {If (! Preg_match ('/^ [-_ 0-9a-za-z] {} $/', $ name, $ matches) {return 'invalid user name '. $ name;} $ user_data = user_dir. '/'. $ name. '. dat '; If (! File_exists ($ user_data) {return "sorry, user {$ name} doesn't exist! ";} Else {$ MSG =" are you sure to delete user $ name? Press Y to confirm or any other key to cancel: "; if (confirm ($ MSG )! = 'Y') {return "canceled! \ R \ n ";}} if (unlink ($ user_data) {return" User $ name has been successfully deleted! ";} Else {return" delete failed! ";}} Function confirm ($ MSG ='') {fwrite (stdout, $ MSG); Return fgetc (stdin);} function modify_user ($ name) {$ user_data = user_dir. '/'. $ name. '. dat '; If (! File_exists ($ user_data) {return "sorry, user {$ name} doesn't exist! ";}$ MSG =" Please enter old password (1-16 chars): "; fwrite (stdout, $ MSG); While ($ pass = trim (fgets (stdin, 16) = '') {fwrite (stdout," invalid password! \ R \ n ". $ MSG);} $ fp = fopen ($ user_data, 'r + '); If (! $ FP) {return "Sorry, some error occurred while reading user data.";} else {$ old_pass = fread ($ FP, 32); If (MD5 ($ pass )! = $ Old_pass) {return "old password $ old_pass! = $ Pass doesn't match ";}$ MSG =" Please enter new password (1-16 chars): "; fwrite (stdout, $ MSG ); while ($ pass = trim (fgets (stdin, 16) = '') {fwrite (stdout," invalid password! \ R \ n ". $ MSG);} rewind ($ FP); If (fwrite ($ FP, MD5 ($ pass) {$ MSG =" New Password accepted! "; } Else {$ MSG = "Sorry, some error occurred while writing user data. ";}fclose ($ FP) ;}return $ MSG ;}> you can continue to implement the following web functions. However, there is no need for two functions to share one file. Command line. It is best to put it outside the web directory to avoid leakage of confidential information due to configuration errors.