(PHP 4, PHP 5)
strspn — Find length of initial segment matching mask
( string $str1
, string $str2
[, int $start
[, int $length
The line of code:
$var = strspn("42 is the answer, what is the question ...", "1234567890");
will assign 2 to $var
, because the string "42" will
be the longest segment containing characters from "1234567890".
The first string.
The second string.
The start position of the string to examine.
Negative value counts position from the end of a string.
The length of the string to examine.
Negative value sets length from the end of a string.
Returns the length of the initial segment of str1
which consists entirely of characters in str2
parameters were added
Example #1 strspn() example
echo strspn("foo", "o", 1, 2); // 2
Note: This function is