komplex Validation

Anon

Hello,
i like to write a script for a guestbook now i like to make a validation from the $message
Variable, i like to check if there are some bad words like "sex" ore so inside the message,
i like to check 6 or 7 words if they are inside from $message
they have to put out some errormessage:

if ($message ='sex'.'other')
include ("error.inc");

dont work, sorry but i'am very new in php
and i dont know how i implement this, can someone help?

thanks in advance

Anon

You can use ereg_* functions to do this.

ex:

if (ereg("sex",$message)) {
echo "Whow this is a bad word";
} else {
...
}

You could create an array of bad word and test the regular expression against the message if it return true then there's a bad word.

ex:

$badword=array("sex","drug");

// Build the regex by concatening array with |
$forbidden="(".implode("|",$badword).")";

if (ereg($forbidden,$message)) {
echo "Whow there is a bad word in your message";
} else {
...
}

But in this case you don't know which which word was the bad word.
To know this you must do the test for each element of the array

hth

JBL

Anon

You can use ereg_* functions to do this.

ex:

if (ereg("sex",$message)) {
echo "Whow this is a bad word";
} else {
...
}

You could create an array of bad word and test the regular expression against the message if it return true then there's a bad word.

ex:

$badword=array("sex","drug");

// Build the regex by concatening array with |
$forbidden="(".implode("|",$badword).")";

if (ereg($forbidden,$message)) {
echo "Whow there is a bad word in your message";
} else {
...
}

But in this case you don't know which which word was the bad word.
To know this you must do the test for each element of the array

hth

JBL

Anon

You can use ereg_* functions to do this.

ex:

if (ereg("sex",$message)) {
echo "Whow this is a bad word";
} else {
...
}

You could create an array of bad word and test the regular expression against the message if it return true then there's a bad word.

ex:

$badword=array("sex","drug");

// Build the regex by concatening array with |
$forbidden="(".implode("|",$badword).")";

if (ereg($forbidden,$message)) {
echo "Whow there is a bad word in your message";
} else {
...
}

But in this case you don't know which which word was the bad word.
To know this you must do the test for each element of the array

hth

JBL

Anon

Thank you, this works great!!
but one question more: is it also possible to check not only "drugs" i like to check all
words where "drugs" are inside:
"drugdealer" whitout to put all words in the array like "drug"
or do i need all words in the array?

thanks
alfred

Anon

Shouldn't it be eregi not ereg.
eregi is like ereg but case-insensitive.

If you use eregi and arrays of bad words, you don't have to care about the case of each word.
I.e.
$badword=array("sex","Sex,"Drug","drug");
becomes
$badword=array("sex","drug");

Anon

It's true. You should use eregi to be cas insensitive.

eregi("drug",$message)

will match for drug, Drug, Drugs, drugdealer,...

JBL

Anon

Thanks to all who help, no i know whats happen with ereg and eregi

Alfred