PHP search string In another string the first occurrence of the function stristr ()

Instance

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

<?phpecho stristr ("Hello world!", "World");? >

Definition and usage

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

Note: This function is binary safe.

Note: The function is case-insensitive. For case-sensitive searches, use the strstr () function.

Grammar

Stristr (String,search,before_search)

parameters	description
string	required. Specifies the string to be searched.
search	required. Specifies the string to search for. If the parameter is a number, the character that matches the ASCII value of the number is searched.
before_search	optional. A Boolean value with the default value of "false". If set to "true", it returns the string portion of the first occurrence of the search parameter.

technical details

return value:	Returns the remainder of the string (from the matching point). returns FALSE if the searched string is not found.
php version:	4+
update log:	in PHP 5.3, the Before_search parameter is added. in PHP 4.3, the function becomes binary safe.

More examples

Example 1

Searches for a string with an ASCII value of "O" and returns the remainder of the string:

<?phpecho stristr ("Hello world!", 111);? >

Example 2

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

<?phpecho stristr ("Hello world!", "World", true);? >