w3resource

PHP: strcspn() function

Description

The strcspn() function is used to get the number of characters that occur between the start of the main string and the first occurrence of any character listed in the second string.

Version:

(PHP 4 and above)

Syntax:

strcspn(main_string, second_string, start_position, string_length)

Parameters:

Name Description Required /
Optional		 Type
main_string The initial string. Required String
second_string The second string whose characters will be checked. Required String
start_position Starting position of the string to examine. Optional Integer
string_length Length of the string to examine. Optional Integer

Return value:

The length of the segment.

Value Type: Integer.

Pictorial Presentation

php-string-strcspn()

Example:

<?php
echo strcspn('W3resource.com', '.');
?>

Output: 

10

View the example in the browser

See also

PHP Function Reference

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Next: strip_tags



PHP: Tips of the Day

In PHP, there are two versions of logical AND and OR operators.

Operator True if
$a and $b Both $a and $b are true
$a && $b Both $a and $b are true
$a or $b Either $a or $b is true
$a || $b Either $a or $b is true

Note that the && and || opererators have higher precedence than and and or. See table below:

Evaluation Result of $e Evaluated as
$e = false || true True $e = (false || true)
$e = false or true False ($e = false) or true

Because of this it's safer to use && and || instead of and and or.