How to use php strchr function?

php The strchr function is used to search for the first occurrence of a string in another string. Its syntax is strchr (string, search, before_search). The parameter string is required, which refers to the string to be searched; search is required, Refers to the string that specifies the search.

#php How to use strchr function?

Definition and Usage

strchr() function searches for the first occurrence of a string in another string.

This function is an alias of the strstr() function.

Note: This function is binary safe.

Note: This function is case-sensitive. To perform a case-insensitive search, use the stristr() function.

Syntax

strchr(string,search,before_search);

Parameters

string Required. Specifies the string to be searched for.

search Required. Specifies the string to search for.

If the parameter is a number, search for characters matching the ASCII value corresponding to the number.

before_search Optional. Boolean value with default value "false"

If set to "true", it will return the portion of the string before the first occurrence of the search parameter.

Return value: Returns the rest of the string (from the matching point). Returns FALSE if the searched string is not found.

PHP version: 4

Change log: In PHP 5.3, the before_search parameter is added.

Example 1

Search a string by the ASCII value of "o" and return the rest of the string:

<?php
echo strchr("Hello world!",111);
?>

Output:

o world!

Example 2

Return the string part before the first occurrence of "world":

<?php
echo strchr("Hello world!","world",true);
?>

Output:

Hello

Example 3

Find the first occurrence of "world" in "Hello world!" and return the rest of this string:

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

Output:

world!

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