[PHP] Proper Way To Check For POST?

[Trigs]

What's the proper way to check to see if POST data was submitted?

if($_POST) doesnt work and if($_POST['submit']) doesnt work if I had a submit button named submit.

[Iszak]

if ($_POST)
{
// Post submited
}
That works for me also.


if (empty($_POST) === false)
{
// Post submited
}
But I usually do..


if (isset($_POST['submit']))
{
// Post submited
}
So yeah, look into empty and isset functions.

[Excellent2]

Usually I use.


if (empty($var)) //Define your variable here
{

}

[Blob]

Use Iszaks or use



if( $_POST['variable'] != '' )
{
// posted
}

[Trigs]

if($_POST) and if(isset($_POST['submit']) don't work for me... they just refresh the page

[Excellent2]

if($_POST) and if(isset($_POST['submit']) don't work for me... they just refresh the pageif(!$_POST)

[Trigs]

isn't

if($_POST) {
// process info
} else {
// error msg
}

and

if(!$_POST) {
// error
} else {
// process data
}

the same?

[Excellent2]

isn't

if($_POST) {
// process info
} else {
// error msg
}

and

if(!$_POST) {
// error
} else {
// process data
}

the same?Yeah, just in reverse order. But what I was saying is if you're wanting to check if data is empty, use either the empty function or !$_POST['lol']. You need to make sure they're submitting the form by doing something like:


if(isset($_POST['form']))
{

}That will check if they have posted the form. On the submit name just add 'form'.

This isn't the best method but it'll work.

Edit: Oh and add the method as POST.

[Trigs]

Same problem. Page just refreshes.

For example:


<?php
if(!$_POST) {
echo "hi $_POST['name']";
} else {
echo '
<form method="post" enctype="text/plain">
Name: <input type="text" name="name"> <br />
<input type="submit" value="Submit" name="submit">
</form>
';
?>

same with isset

[DeejayMachoo$]

Same problem. Page just refreshes.

For example:


<?php
if(!$_POST) {
echo "hi $_POST['name']";
} else {
echo '
<form method="post" enctype="text/plain">
Name: <input type="text" name="name"> <br />
<input type="submit" value="Submit" name="submit">
</form>
';
?>same with isset



<?php
if($_POST) {
echo "hi $_POST['name']";
} else {
echo '
<form method="post" enctype="text/plain">
Name: <input type="text" name="name"> <br />
<input type="submit" value="Submit" name="submit">
</form>
';
?>

[Calgon]

Sounds like you're on a bad host, hearing all of the problems that you've had with PHP.

[Blob]

Sounds like you're on a bad host, hearing all of the problems that you've had with PHP.

Or he just can't code PHP...

[Trigs]

<?php
if($_POST) {
echo "hi $_POST['name']";
} else {
echo '
<form method="post" enctype="text/plain">
Name: <input type="text" name="name"> <br />
<input type="submit" value="Submit" name="submit">
</form>
';
?>


oh yer that ! was a typo. that still doesn't work.

@blob: if you're so good why don't you help me by telling me what I did wrong instead of insulting me?

[Agnostic Bear]

oh yer that ! was a typo. that still doesn't work.

@blob: if you're so good why don't you help me by telling me what I did wrong instead of insulting me?

He wasn't insulting you, he was just making a point.

Also use this instead of !$_POST:

empty( $_POST[ 'name' ] ) === false

also get rid of that enctype there is no need for it

[Decoma]

<?php
if(isset($_POST['name'])){
echo("hi ".$_POST['name']."");
} else {
echo ("
<form method=\"post\" enctype=\"text/plain\" action=\"$_SERVER['PHP_SELF']\">
Name: <input type=\"text\" name=\"name\"> <br />
<input type=\"submit\" value=\"Submit\" name=\"submit\">
</form>
");
?>

Try that. Does it refresh now. And what do you mean the page refreshes? Like when you load it it refreshes? Or what...?

[Agnostic Bear]

<?php
if(isset($_POST['name'])){
echo("hi ".$_POST['name']."");
} else {
echo ("
<form method=\"post\" enctype=\"text/plain\" action=\"$_SERVER['PHP_SELF']\">
Name: <input type=\"text\" name=\"name\"> <br />
<input type=\"submit\" value=\"Submit\" name=\"submit\">
</form>
");
?>Try that. Does it refresh now. And what do you mean the page refreshes? Like when you load it it refreshes? Or what...?

That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>

[Trigs]

I have been trying to figure this out but I can't...

Why on earth does pressing the Submit button just clear the boxes/refresh the page? Could it be that I messed up the action="" value?

[Invent]

I have been trying to figure this out but I can't...

Why on earth does pressing the Submit button just clear the boxes/refresh the page? Could it be that I messed up the action="" value?

You do have method="post" in the <form> tag don't you?

[Trigs]

No, I thought you didn't need it if it's on the same page. I've also tried echo '<form action="'.$HTTP_SERVER_VARS['PHP_SELF'].'"; and so on but same problem.

[Agnostic Bear]

No, I thought you didn't need it if it's on the same page. I've also tried echo '<form action="'.$HTTP_SERVER_VARS['PHP_SELF'].'"; and so on but same problem.


That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>



That is useless, horrible code.

Fine I will do it for you.



<?php
if( empty( $_POST[ 'name' ] ) === false ) {
echo 'Hi, ' . $_POST[ 'name' ];
} else {
echo <<<HTML
<form action="" method="post">
Name: <input type="text" name="name" /> <br />
<input type="submit" value="Submit" name="submit" />
</form>
HTML;
}
?>


internet

[Blinger1]

internet
this guy is an idiot seriously.

[Agnostic Bear]

this guy is an idiot seriously.

are we talking about me or him here, cause i can't even tell

[Blinger1]

talking about fagzone.

[Invent]

No, I thought you didn't need it if it's on the same page. I've also tried echo '<form action="'.$HTTP_SERVER_VARS['PHP_SELF'].'"; and so on but same problem.

What? Of course you need the method attribute o_o.