PHP strtok() Function
Topic: PHP String ReferencePrev|Next
Description
The strtok() function splits a string into smaller strings (tokens).
The following table summarizes the technical details of this function.
| Return Value: | Returns a string token. |
|---|---|
| Version: | PHP 4+ |
Syntax
The basic syntax of the strtok() function is given with:
The following example shows the strtok() function in action.
Example
Run this code »<?php
// Sample string
$str = "Mary had\ta little\nlamb";
// Using space, tab and newline as tokenizing characters
$tok = strtok($str, " \t\n");
// Printing tokens
while($tok !== false){
echo "$tok<br>";
$tok = strtok(" \t\n");
}
?>Note: Only the first call to strtok() uses the string argument. Every subsequent call to strtok only needs the split argument, because it keeps track of where it is in the current string. To tokenize a new string, call strtok() with the string argument again.
Parameters
The strtok() function accepts the following parameters.
| Parameter | Description |
|---|---|
| string | Required. Specifies the string to split. |
| split | Required. Specifies one or more characters to be used when splitting up the string. |
More Examples
Here're some more examples showing how strtok() function actually works:
The following example shows the behavior of this function when an empty part found.
Example
Run this code »<?php
// Sample string
$str = "/products";
// Tokenizing string using forward slash character
$first_token = strtok($str, "/");
$second_token = strtok("/");
// Displaying info about tokens
var_dump($first_token, $second_token);
?>
