PHP Conference Japan 2024

mb_stripos

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

mb_striposFinds position of first occurrence of a string within another, case insensitive

Description

mb_stripos(
    string $haystack,
    string $needle,
    int $offset = 0,
    ?string $encoding = null
): int|false

mb_stripos() returns the numeric position of the first occurrence of needle in the haystack string. Unlike mb_strpos(), mb_stripos() is case-insensitive. If needle is not found, it returns false.

Parameters

haystack

The string from which to get the position of the first occurrence of needle

needle

The string to find in haystack

offset

The position in haystack to start searching. A negative offset counts from the end of the string.

encoding

Character encoding name to use. If it is omitted, internal character encoding is used.

Return Values

Return the numeric position of the first occurrence of needle in the haystack string, 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.
7.1.0 Support for negative offsets has been added.

See Also

  • stripos() - Find the position of the first occurrence of a case-insensitive substring in a string
  • strpos() - Find the position of the first occurrence of a substring in a string
  • mb_strpos() - Find position of first occurrence of string in a string

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User Contributed Notes 1 note

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FangTS_
5 years ago
How works on examples mb_stripos:

First we will watch example on symbols(..?).
<?php
$text
= "Look! It's a text! Wow!"; //simple text
$spaceIsHere = mb_stripos($text," "); //you can replace " " on something what you need or want
$text2 = mb_substr($text,$spaceIsHere); //cutting text with $spaceIsHere
print ($text2);
/* Print will show that result:
" It's a text! Wow!"
Look. That " " wasn't cutted, because mb_substr don't write in var position after " " - he write WHERE is " " in string. */
?>

Also it can work on words, sentences...
Here's one of examples:
<?php
$text
= "Look! It's a text! Wow!"; //familiar text, right?)
$afterNeededWord = mb_stripos($text,"text!"); //you can replace "text!" on something else what you need
$text3 = mb_substr($text, $afterNeededWord); //cutting string (it is string? im stupid in that question xD)
print ($text3);
/* Print will show that result:
"text! Wow!"
Explaining the same. */
?>

I hope it was useful with my "good" English skills. ;D
Have a nice day, coder.
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