How to Find Part of String - substr() Function
PHP String FunctionsThe substr() function returns a part of a string specified by the offset and length parameters.
Syntax
substr($string, $start, $length)
Parameters
- string (Required) - Specifies the string to return a part of.
- start (Required) - Specifies where to start in the string. A positive number starts at a specified position in the string. A negative number starts at a specified position from the end of the string. 0 means to start at the first character in string.
- length (Optional) - Specifies the length of the returned string. Default is to the end of the string.
Example
$rest = substr("abcdef", 0, -1); // returns "abcde"
$rest = substr("abcdef", 2, -1); // returns "cde"
$rest = substr("abcdef", 4, -4); // returns false
$rest = substr("abcdef", -3, -1); // returns "de"