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php strspn() function

Chinese translationRecent Updates：2018-04-18 11:22:57

英[strɪŋ] 美[strɪŋ]

n.String; rope, belt; thread, plant fiber; [Computer Science] String

vt. Winding, tuning; To line up in a line or a series; to tie, tie or hang with a thread; to extend or extend

Third person singular: strings Plural: strings Present participle: stringing Past tense: strung Past participle: strung

php strspn() function Video explanation

php strspn() function syntax

Function: Return the number of certain characters contained in the string

Syntax: strspn(string,charlist,start,length)

Parameters:

Parameters	Description
string	Required. Specifies the string to be searched for.
charlist	Required. Specifies the characters to search for.
start	Optional. Specifies where in the string to begin.
length	Optional. Defines the length of the string.

Description: Returns the number of characters specified in the charlist parameter contained in the string.

php strspn() function example

<?php
echo strspn("Hello world!","kHlleo");
?>

Click the "Run instance" button to view the online instance

Output:

<?php
echo strspn("PHP is a good development language! I love PHP","PHP");
?>

Click the "Run Instance" button to view the online instance

Output:

submit