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strcspn (PHP 3>= 3.0.3, PHP 4 , PHP 5) strcspn --
Find length of initial segment not matching mask
Descriptionint strcspn ( string str1, string str2 [, int start [, int length]])
Returns the length of the initial segment of
str1 which does not
contain any of the characters in str2.
As of PHP 4.3.0, strcspn() accepts two optional
integer parameters that can be used to define the
start position and the
length of the string to examine.
See also strspn().
info at owensoft dot net
25-Jan-2003 08:09
this function checks if a string contains special characters excluding
"_" and "-". you can also easy customise
it.
function vstr2 ($str) { //
if ( strcspn($str,
'~`!@#$%^&*()+{}[]| \\:;<>,./?+=' ) != strlen($str) ) return
false;
if ( !ctype_print ($str) ) return false;
return
true;
}
netanakroas at freemail dot hu
20-Dec-2002 05:42
When you need something like... check a sting, comapre whit an another
string, and if the sting's character is not on the another sting's
character, then... anything. Then you should use this function:
function
strchk ($in,$eng){
$i=0;
$fail=0;
while
($i<strlen($in))
{
$temp="";
$f=0;
$ok=0;
$temp=substr($in,$i,1);
while
($f<strlen($eng))
{
$temp2="";
$temp2=substr($eng,$f,1);
if
($temp2==$temp){$ok=1;}
$f++;
}
$i++;
$f=0;
if
($ok==0){$fail=1;break;}
}
return
$fail;
}
---------------------------------
Usage:
int value
strchk(string to check, possible characters string);
When all of the
string's characters are can be find in the "possible characters
sting", you will recive a 0. When not, you recive 1.
by
NetAnakroas
php at nospam dot mike2k dot com
20-Nov-2002 11:39
this is an awesome function if you want to test letter-based modes or
roles, i.e.:
function check_access($required_roles,$user_roles)
{
if(strcspn($required_roles,$user_roles) == strlen($required_roles))
{
print "no access. do your lockout routine here or
die().";
} else {
print "access
granted.";
}
}
so say you have roles for u = user, a =
admin, s = superadmin, and you want to make sure the user is an admin OR
superadmin, and the user is only "u" - it will return
false:
checkaccess("as",$user_roles)
but if they
have "a" it will be true.. i'm sure you could use the strspn()
function to make sure the ANDs work, but i only used ORs in my situation.
almost kinda like doing bitwise on the alphabet.
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strcoll
