Core Function StrStr

StrStr( <haystack>, <needle>, <before_needle>, <find_last>, <case> )

Description

Find the first/last occurrence of a string

Parameters

haystack

The input string.

needle

If needle is not a string, it is converted to an integer and applied as the ordinal value of a character.

before_needle

If TRUE, StrStr() returns the part of the haystack before the first/last occurrence of the needle (excluding the needle).

Default: false

find_last

If TRUE, StrStr() will find the last occurrence of the needle instead of the first.

Default: false

case

If TRUE, StrStr() will ignore case and do the comparison case insensitively.

Default: false

Return Value

Returns the portion of string, or FALSE if needle is not found.

Remarks

None.

Example

// basic example
$email  = 'name@example.com';
$domain = strstr($email, '@');
echo "Value: $domain\n"; // prints @example.com
 
// using before param to return the text before rather than after the find
$user = strstr($email, '@', true);
echo "Value: $user\n"; // prints name
 
$string1="google.com";  
$newstring=strstr($string1,".");  
echo "Value: $newstring\n";  // Prints .COM
 
// using find last param to find the last substring instead of the first
$string2="google.com.uk";  
$newstring1=strstr($string2,".", false, true);  
echo "Value: $newstring1\n";  // Prints .COM
 
// using ignore case param
$string3  = 'cats AnD dogs';
$newstring2 = strstr($string3, 'and', false, false, true);
echo "Value: $newstring2\n"; // prints AnD dogs