Re: Re: What could the intention be of someone using "\0" in comparison be?

Well, if I use var_dump("\0") here on my windows7 64 bit machine, it spits out the following: string '�' (length=1) And, if I check out the ascii character code of that blank character here it returns as 65533 //that's just interpreted using my screenreader's say character code option on output string Pretty much just wondering what they meant to do, and would also have thought it was a form of typo in that they wanted to double check if that variable, which must have something assigned to it included those characters/letters, etc.? Stay well Jacob Kruger Blind Biker Skype: BlindZA "Roger Wilco wants to welcome you...to the space janitor's closet..." ----- Original Message ----- From: "Toby Hart Dyke" <toby@hartdyke.com> To: <php-windows@lists.php.net> Sent: Tuesday, 19 August, 2014 4:46 PM Subject: Re: [PHP-WIN] Re: What could the intention be of someone using "\0" in comparison be?

But what does "\0" mean, and where is it documented? In this context, it clearly means zero, but not false, so the intention is to check for the presence of the tested string. It seems that the backslash means to treat as a literal zero character, which then gets treated as a "true" zero value, rather than a false. I get PHP's dynamic typing, but this seems a bit tortuous, and I would always use your idiom ( !== false) whic is much more the PHP way. Toby On 8/19/2014 2:58 PM, Christoph Becker wrote:

Jacob Kruger wrote:

As in, while my first guess would be that they'd meant to use just the number 0, what would your guesstimate be relating to why someone would in fact use the following syntax as part of determining if a certain phrase/string was included in a variable's value? //start excerpt... if (strpos ($text, "<b>") >= "\0") //end excerpt ???

Well, using "0" or 0 instead of "\0" would result in unintended behavior. Consider strpos() returning 0, because the $needle is found at the very beginning of $haystack. See <http://3v4l.org/0uaY6>, where the second and third results are not desired. However, I prefer the following way to test that a string is contained in another string: if (strpos($haystack, $needle) !== false)

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