needle: /
string: o/a/i
if before_needle is 1 then needle is excluded: "o/a"
if before_needle is false then needle is included: "/i"
as code:
$str="o/a/i";
$cs="/";
echo "if before_needle == 1 then needle is excluded"."\n";
$str="o/a/i";
$cs="/";
echo mb_strrchr ($str,$cs,1)."\n";
echo "if before_needle == false then needle is included"."\n";
$str="o/a/i";
$cs="/";
echo mb_strrchr ($str,$cs,0)."\n";
mb_strrchr
(PHP 5 >= 5.2.0, PHP 7, PHP 8)
mb_strrchr — Finds the last occurrence of a character in a string within another
Description
mb_strrchr(
string
string
bool
?string
): string|false
string
$haystack,string
$needle,bool
$before_needle = false,?string
$encoding = null): string|false
mb_strrchr() finds the last occurrence of
needle in haystack
and returns the portion of haystack.
If needle is not found, it returns false.
Parameters
-
haystack -
The string from which to get the last occurrence of
needle -
needle -
The string to find in
haystack -
before_needle -
Determines which portion of
haystackthis function returns. If set totrue, it returns all ofhaystackfrom the beginning to the last occurrence ofneedle. If set tofalse, it returns all ofhaystackfrom the last occurrence ofneedleto the end, -
encoding -
Character encoding name to use. If it is omitted, internal character encoding is used.
Return Values
Returns the portion of haystack.
or false if needle is not found.
Changelog
| Version | Description |
|---|---|
| 8.0.0 |
needle now accepts an empty string.
|
| 8.0.0 |
encoding is nullable now.
|
See Also
- strrchr() - Find the last occurrence of a character in a string
- mb_strstr() - Finds first occurrence of a string within another
- mb_strrichr() - Finds the last occurrence of a character in a string within another, case insensitive
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User Contributed Notes 1 note
Anonymous ¶
1 year ago
