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PHP strspn () function

PHP String Reference PHP String Reference

Examples

Returns the number of characters in the string "kHlleo" contains "Hello world!":

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

Running instance »

Definition and Usage

strspn () function returns the number of characters specified in the parameter charlist included in the string.

Tip: Use strcspn () function to return before finding any given character, the number of characters in the string to find.

Note: This function is binary safe.


grammar

strspn( string,charlist,start,length )

参数 描述
string 必需。规定被搜索的字符串。
charlist 必需。规定要查找的字符。
start 可选。规定在字符串的何处开始。
length 可选。定义字符串的长度。

technical details

return value: Returns the number of characters specified in the parameter charlist included in the string.
PHP version: 4+
Update log: In PHP 4.3, add the start and length parameters.


More examples

Example 1

Returns the number of characters that contains "abc" string "abcdefand" in:

<?php
echo strspn("abcdefand","abc");
?>

Running instance »


PHP String Reference PHP String Reference