Message boards with no database support

A simple message board with no database support, mainly the practice of storing and reading data in a file way. /** * This is a single page without database support of the message board system * Knowledge Points: * 1, the use of Heredoc documents:>>>eoteot; Cannot have any spaces before the second EOT line * 2, the file read and write operation * 3, Fread and fgets differences, fread read the specified length of the string, fgets read a line, just save the data when a line is a message content, conducive to read * * 4, File lock, this version has not been implemented, only wrote the reference code. * */ $file = "Message.txt"; if (Isset ($_post) &&!empty ($_post)) { $post = $_post; $content = "title:". $post [' title ']. ' content: '. $post [' message ']. " \n\r "; if (file_exists ($file)) { Add_message ($file, $content); }else{ Create_message_file ($file, $content); } } /** * Create message file and save message when first use * Enter description here ... * @param unknown_type $file * @param unknown_type $message */ function Create_message_file ($file, $message) { $MSGH = fopen ($file, "w"); Flock ($file, LOCK_EX); Fwrite ($MSGH, $message); Fclose ($MSGH); echo "added message message successfully. "; Echo <<<> EOT; } /** * Add new message information to file * Enter description here ... * @param unknown_type $file * @param unknown_type $message */ function Add_message ($file, $message) { $MSGH = fopen ($file, "a"); Flock ($MSGH, LOCK_EX); Fwrite ($MSGH, $message); Fclose ($MSGH); echo "Your message has been successfully saved. "; Echo <<<> EOT; } /** * Show Message content * Enter description here ... * @param unknown_type $file */ function Show_message ($file) { $MSGH = fopen ($file, "R"); Flock ($MSGH, LOCK_EX); while ($msg = fgets ($MSGH)) { Echo $msg; echo " "; } Fclose ($MSGH); } ?> Simple message board with no database support Simple message Board without database support _ message content display if (!file_exists ($file) | | FileSize ($file) <1) { }else{ } ?> ?> ?> No messages yet. Show_message ($file); ?> Please enter your message title and content below. Copy Code

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