PHP strcspn() Function

The strcspn() is predefined function of PHP. It is used to find the length of initial segment or returns the number of characters including whitespaces found in a string.

Note: This function is binary-safe.

Syntax:

Parameter	Description	Required/Optional
String	Specify the string to search.	Required
Char	Specifies the characters to search for.	Required
Start	Specify where in string start.	Optional
Length	Specify the length of string.	Optional

Example 1

<?php
// count all character with whitespace
$str="Hello Javatpoint";
echo "Your string is: ".$str;
echo "<br>";
echo "By using strcspn() function:".strcspn($str,"w");
?>

Output:

Your string is: Hello Javatpoint
By using strcspn() function:16

Example 2

<?php
//The start position is 0 and the length of the search string is 5.
$str="Hello Javatpoint";
echo "Your string is: ".$str;
echo "<br>";
echo "By using strcspn() function:".strcspn($str,"w","0","5");
?>

Output:

Your string is: Hello Javatpoint
By using strcspn() function:5

Example 3

<?php
$a = strcspn('abcd',  'apple');
var_dump($a);
?>

Output:

int(0)

Example 4

<?php
$str = strcspn('abcd',  'banana');
var_dump($str);
?>

Output:

int(0)

Example 5

<?php
$str = strcspn('hello', 'l');
var_dump($str);
?>

Output:

int(2)

Example 6

<?php
$str = strcspn('hello', 'world');
var_dump($str);
?>

Output:

int(2)

Example 7

<?php
$str = strcspn('abcdhelloabcd', 'abcd', -9);
var_dump($str);
?>

Output:

int(5)

Example 8

<?php
$str = strcspn('abcdhelloabcd', 'abcd', -9, -5);
var_dump($str);
?>

Output:

int(4)

References:

http://php.net/manual/en/function.strcspn.php

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PHP strcspn() Function

Note: This function is binary-safe.

Syntax:

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8

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