PHP alternative when there is no mysql support

Generally, personal free homepage spaces do not provide MySQL support, and even if they do, it is very demanding, so it is important to find a good alternative!
PHP’s file processing function is very powerful, so you can use file access instead!
(You must know that when there is no database, everything is organized by files! Haha!), each data item is separated by special symbols. I use "||" to facilitate reading a single record through the explode() function. !
In fact, the idea of ​​database can still be used here! Like a database index!
So you must make an index file first! (It is not correct to say this)
Let’s take the guestbook as an example:
The main file is:
index.database
The structure is as follows:
Name of the messager||Gender of the messager||Message time||Message content storage location| |feiyn (This is convenient for reading when being annoyed by 'n'!
Each stored line can be easily read through PHP's fgets() function, or the file() function reads each line into an array
In order To prevent conflicts between multiple people writing data at the same time, locking is also required (also implemented using files)
The following is the writing code
//The following parameters must be passed in:
//Name of the person who left the message$ name
//Gender of the message person $sex
//Time of the message $time
//Storage location of the message content $savePosite
$indexFile="index.database";
$indexFileLock=$indexFile."Lock";
$message= $name."||".$sex."||".$time."||".$savePosite."||feiy||";//This is the record to be written
while(file_exists($ indexFileLock)) $temp++; //Check whether it is locked
fclose(fopen($indexFileLock,"w")); //If not, enter and lock to avoid the same access conflict
$fp=fopen($indexFile, "a");
fputs($message,strlen($message));
fclose($fp);
unlink($indexFileLock);//Unlock
?>
Read code
$ indexFile="index.database";
$indexFileLock=$indexFile."Lock";
while(file_exists($indexFileLock)) $temp++; //Check whether it is locked
fclose(fopen($indexFileLock,"w") ); //If not, enter and lock to avoid the same access conflict
$ary=file($indexFile);
unlink($indexfileLock);//Unlock
for($i=0;$i$tempAry=explode("||",$ary[$i]);
echo("name:".$tempAry[0]);
echo("sex:".$ tempAry[1]);
echo("sex:".$tempAry[2]);
echo("savePosite:",$tempAry[3]);//The message content can be read from this address
}
? >
Through the above, you can easily solve common web applications, such as chat rooms, BBS forums, bookmarks, etc.
If that prawn has a better solution, please enlighten me! Thanks!
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The above introduces the alternatives to PHP when there is no MySQL support, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.