Check textarea if it includes <a> tag

[sean14592]

Hi, I need to check a text box if it contains the <a> tag.

 

Any ideas?

 

Sean

[kbh43dz_u]

you probably want to use strip_tags($text, '<p><div>'); and strip all except allowed tags.

[jonsjava]

if you are searching for that, and then acting on just <a> and nothing else:

<?php
$textarea = $_POST['text']; //change this if needed
if (strstr($textarea, "<a>")){
//do what you're going to do
}
?>

[discomatt]

if (  strpos( $_POST['textboxName'], '<a' ) !== FALSE  )
    echo 'Found an <a> tag!';

[sean14592]

I have tried...

 

if ((strstr($main_desc, "<a")) || (strstr($area_desc, "<a")) || (strstr($getthere_desc, "<a"))){
echo '<br><center>';
echo 'Opps! Looks like we have a problem....<br><br>';
echo '<b>Error: <FONT COLOR="#FF3300"><u>You cannot include links in your any part of your listing unless specifically asked!</u></b></font>';
echo '<br><br><a href="'.$siteurl.'index.php?p=oaddprop5"><img src="'.$siteurl.'style/form/fix_error.gif" width="240" height="40" border="0" /></a>';
exit;
}

 

...sadly didnt work, i used <a> and didn't get any error, I will try other now

 

I have also tried...

 

if (  strpos( $_POST['main_desc'], '<a' ) !== FALSE  ){
    echo 'Found an <a> tag!';
}

 

...still dosent work

Sean

[jonsjava]

worked for me:

<?php
$test = "this is a <a href='test'>test</a>";
if (strstr($test, "<a")){
print "I found you!";
}
?>

[DarkWater]

If those don't work for you, you can try:

 

$post = "Lololol <a href=\"lol.php\">O_O</a>";
if (eregi('<a(.*)>', $post)) {
echo "Here!\n";  
//stuff
}
else {
  echo "Nope\n";
  //other stuff
}

[DarkWater]

If you're a PCRE kind of person, here:

<?php
$post = "Lolol <a href=lol.php>O_O</a>";
$reg = '/<a(.*?)>/';
if (preg_match($reg, $post)) {
echo "Win!";
}
else {
echo "Fail!";
}
echo "\n";
?>

 

Either works.

[sean14592]

If those don't work for you, you can try:

 

$post = "Lololol <a href=\"lol.php\">O_O</a>";
if (eregi('<a(.*)>', $post)) {
echo "Here!\n";  
//stuff
}
else {
  echo "Nope\n";
  //other stuff
}

 

Ok, when i try this i get....

Warning: eregi() [function.eregi]: REG_BADRPT in ******/public_html/pages/oaddprop6.php on line 154
Nope 

 

 

line 154 is....

if (eregi('<a(.*)>', $post)) {

 

 

Cheers

Sean

 

[sean14592]

If you're a PCRE kind of person, here:

<?php
$post = "Lolol <a href=lol.php>O_O</a>";
$reg = '/<a(.*?)>/';
if (preg_match($reg, $post)) {
echo "Win!";
}
else {
echo "Fail!";
}
echo "\n";
?>

 

Either works.

 

I get fail every time

[DarkWater]

Let me see what's actually in your variable.  Because it works for me.    Please show us the output of echo $_POST['whatever'] (I don't know which key you're using, lol), and obviously put in the correct key.

 

(And you're making me use PHP 5 for this. =(  PHP6 doesn't use ereg anymore.  That's why I wrote a PCRE one too, lol.)

[sean14592]

Here is my full code:

 

Form

http://pastebin.com/m6e3ba10d

 

Process Page

http://pastebin.com/m22ec71e

 

 

 

Cheers

Sean

[sean14592]

I'm using PHP 5

[DarkWater]

Please show me an example of what would in $main_desc or whatever.

[sean14592]

In $main_desc I enter '<a' and I get fail(false), good but if I enter 'sdsadas' I get Fail

[DarkWater]

Enter:

 

<a>

 

That's an <a> tag.  Rofl. =/  *Sighs*

[sean14592]

lol, my question was to stop <a, but same thing.

 

I enteed and get back 'Fail!'

 

 

Sean, btw thanks for helping

[DarkWater]

That's impossible... I just entered this script:

 

<?php

$post = "<a>";

if (eregi('<a(.*)>', $post)) {

echo "Lol\n";

}

?>

 

And it output "Lol".  It should work if you're doing it correctly.

[sean14592]

ok, I tried that script like before, I works if i enter <a>, it displays "lol"

 

Though it also displays "lol" if I enter "dsdasdas"

 

weird

sean

[DarkWater]

Doesn't for me.  I just tried it.

[sean14592]

have u got msn, so i can let u try on my site?

 

cheers

sean

[DarkWater]

SerpentScars@hotmail.com