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Hatch

06-21-2002 05:35 PM

checking string for '

I'm using php.
I have a text box in a form and I want to check if they have typed in a ' charactor in that field. How do i do that in php.
Thanks

SYP}{ER

06-21-2002 06:51 PM

PHP Code:


		
			
if (strstr ($string_to_search, "'")!=false){

  //Yup, they typed it.

}else{

  //Nope, they didn't type it.

}

Note that if you're trying to comment them out, you can use

PHP Code:


		
			
addslashes()

or to remove the slashes, you can use

PHP Code:


		
			
stripslashes()

Jeewhizz

06-22-2002 01:24 PM

aaron was nearly right... tho one error.. use this code :)

PHP Code:


		
			
if (strstr ($string_to_search, "'")!==false){

  //Yup, they typed it.

}else{

  //Nope, they didn't type it.

}

Jee

P.s. junior members eh ;) :p

SYP}{ER

06-25-2002 11:03 PM

Hey, what was my mistake? the !== instead of !=?

Well check THIS out, mista:

http://www.aaron-wright.com/grr.php

:p

If I'm still wrong, please clarify. lol

ReadMe.txt

06-28-2002 10:33 PM

i'd have to say that aarons right !== is not correct AFAIK, unless PHP has been changed

SYP}{ER

06-28-2002 10:52 PM

Jee may be right actually, but only if you're using the latest version of PHP :) I heard there were some changes being made and that we'll all have to get used to them, but then again I could be terribly misinformed and maybe there isn't even a new version of PHP :eek:

I need to sit down.

Thejavaman1

06-28-2002 11:14 PM

or just

PHP Code:


		
			
if(strstr($string_to_search, "'")){



  //Yup, they typed it.



}else{



  //Nope, they didn't type it.



}

because not false is the same as true... ;)

mordred

06-30-2002 03:48 PM

...but being exact, the return value of strstr() isn't a boolean true either - it's only casted to true in the if-statement.

Apparently Jeewhizz confused strstr() with strpos(), because with strpos() you have to be wary of a returned 0 which gets casted to false, that's why you should use !== instead of !=.

http://www.php.net/manual/en/function.strpos.php

Phip	06-30-2002 10:30 PM

*reads post and laughs to self*

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