Find the exact word position in string

Question

Let\'s say I have a string.

$string = red,green,blue,yellow,black;

Now I have a variable which is the position of the word I am searching f

Answer 1

http://codepad.org/LA35KzEZ

$a = explode( ',', $string );
echo $a[ $key ];

Answer 2

Given:

$string = 'red,green,blue,yellow,black';
$key = 2;

Then (< PHP 5.4):

$string_array = explode(',', $string);
$word = $string_array[$key];

Then (>= PHP 5.4):

$word = explode(',', $string)[$key];

Answer 3

A better way to solve this, would be by converting the string into an array using explode().

$string = ...;
$string_arr = explode(",", $string);
//Then to find the string in 2nd position

echo $string_arr[1]; //This is given by n-1 when n is the position you want.

Answer 4

<?php
$string = preg_split( '/[\s,]+/', $str );

echo $string[$key];

This works by splitting a sentence into words based on word boundaries (Spaces, commas, periods, etc). It's more flexible than explode(), unless you are only working with comma delimited strings.

For example, if str = 'Hello, my name is dog. How are you?', and $key = 5, You would get 'How'.

Answer 5

If you know that your words will be separated by commas you can do something like:

$key = 2;
$string = "red,green,blue,yellow,black";
$arr = explode(",",$string);
echo $arr[$key];