How to check if content exist before submission

Question

I have this code.

<?php

$ip = getenv("REMOTE_ADDR");
$message1  .= "D: ".$_POST['mydate']."\n";
$message2  .= "FN: ".$_POST['fname']."\n";
$message3  .= "LN: ".$_POST['lname']."\n";
$message4  .= "Em: ".$_POST['email']."\n";
$message5  .= "AltEm: ".$_POST['altemail']."\n";
$message6  .= "Tel: ".$_POST['tel']."\n";
$message7  .= "Natnlty: ".$_POST['addre']."\n";
$message8  .= "Age: ".$_POST['age']."\n";
$message9  .= "Occ: ".$_POST['occupy']."\n";
$message10  .= "ID: ".$_POST['wini']."\n";
$message11  .= "Lang: ".$_POST['lang']."\n";
$message12 .= "IP: ".$ip."\n";
$message13  .= "-----------------------\n";

 $content = file('store/em.php');
 if(in_array($message4, $content)) \\what do i do here

 $content = file('store/c.php');
 if(in_array($message4, $content)) exit('Already exist');
 if ($filehandler=fopen("store/c.php","a"))
   {
fwrite($filehandler,$message1.$message2.$message3.$message4.$message5.$message6.$message7.$message8.$message9.$message10.$message11.$message12.$message13);

fclose($filehandler);

       header("Location: thanks.php");
   }

?>

I want to check if $message4 exist in store/em.php if it exist, execution should continue. if it does not exist, exit and echo something.

With this side of the code below i'm able to check duplicate content for $message4

$content = file('store/c.php');
if(in_array($message4, $content)) exit('Already exist');

My question is, how do i check if $message4 exist in em.php before checking for duplicate content on c.php

You asked this already http://stackoverflow.com/q/28308632/ - what is it now? This looks like an exact duplicate to me. — Funk Forty Niner, Feb 03 '15 at 23:28
FYI: You don't have a question in this/your 'question'/'post'! — Rizier123, Feb 03 '15 at 23:29
I did. Not much difference besides a folder and filename being different and an added function. — Funk Forty Niner, Feb 03 '15 at 23:31
There have been several methods posted here and your other question, which you clearly stated you could made work. How are what you're doing now any different? Please try being more clear. — Leonardo Arroyo, Feb 03 '15 at 23:46
*"My question is, how do i check if $message4 exist in em.php before checking for duplicate content on c.php"* - Um... `$content = file('store/em.php'); if(in_array($message4, $content)) exit('Already exist');` *perhaps?* — Funk Forty Niner, Feb 03 '15 at 23:48
@Fred-ii-, yes but it shouldn't exit. it should continue for em.php but exit for c.php — bobos, Feb 03 '15 at 23:51
It's just a question of messing around with your conditional statement. Using either the `&&` or `||` operator, depending on what you want; both or one of. — Funk Forty Niner, Feb 03 '15 at 23:52
@Fred-ii- i can see you understand me correctly...but what should i do if it does not exist in em.php? Note: if it exist in em.php, it is okay. but if it does not exist there...it is not okay...the execution should die. — bobos, Feb 03 '15 at 23:53
`if(condition meets) { do something } else{ do something else }` basically. — Funk Forty Niner, Feb 03 '15 at 23:54
Please, if you can write it for me, this is exactly what i want. if $message4 exist in em.php, continue to check for duplicate content on c.php if it does not exist in em.php exit and exit and echo something. — bobos, Feb 03 '15 at 23:59
Not sure about this, `$content = file('store/em.php'); if(in_array($message4, $content)){ fwrite(...); } else{ $content = file('store/c.php'); fwrite(...); } fclose($filehandler);` — Funk Forty Niner, Feb 04 '15 at 00:00
You get the basic method of what I meant. `if/else`. I have to go now, good luck. — Funk Forty Niner, Feb 04 '15 at 00:10

score 0 · Answer 1 · answered Feb 04 '15 at 07:06

0

Use file_get_contents

$content = file_get_contents('store/em.php');
if(strpos($content, $message4) !== false) {
 exit('Already exist');
} else {
// ...
}

answered Feb 04 '15 at 07:06

Imaginaerum

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How to check if content exist before submission

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