5.5.15

grapheme_substr

(PHP 5 >= 5.3.0, PECL intl >= 1.0.0)

grapheme_substrReturn part of a string

Description

Procedural style

int grapheme_substr ( string $string , int $start [, int $length ] )

Return part of a string

Parameters

string

The input string. Must be valid UTF-8.

start

Start position in default grapheme units. If $start is non-negative, the returned string will start at the $start'th position in $string, counting from zero. If $start is negative, the returned string will start at the $start'th grapheme unit from the end of string.

length

Length in grapheme units. If $length is given and is positive, the string returned will contain at most $length grapheme units beginning from $start (depending on the length of string). If $string is less than or equal to $start grapheme units long, FALSE will be returned. If $length is given and is negative, then that many grapheme units will be omitted from the end of string (after the start position has been calculated when a start is negative). If $start denotes a position beyond this truncation, an empty string will be returned.

Return Values

Returns the extracted part of $string.

Examples

Example #1 grapheme_substr() example

<?php

$char_a_ring_nfd 
"a\xCC\x8A";  // 'LATIN SMALL LETTER A WITH RING ABOVE' (U+00E5) normalization form "D"
$char_o_diaeresis_nfd "o\xCC\x88"// 'LATIN SMALL LETTER O WITH DIAERESIS' (U+00F6) normalization form "D"

print urlencode(grapheme_substr"ao" $char_a_ring_nfd "bc" $char_o_diaeresis_nfd "O"2, -));
?>

The above example will output:

a%CC%8Abco%CC%88

See Also

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