search string from another string and add these string to array [closed]

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Closed 5 years ago.

My string is:

$str = "a quick brown fox over the lazy dog... #fox #dog. hello everybody #lazy";

I want to get #fox, #dog and #lazy from that string and also every words that contains# and I want to add these string to an array like that:

 $array = array(
       [0]=>'#fox',
       [1]=>'#dog',
       [2]=>'#lazy',
   );

Anyone who can help me.. Please. Thanks a lot!

Answer 1

You could make use of this regular expression '/#(\w+)/'

<?php
$str = "a quick brown fox over the lazy dog... #fox #dog. hello everybody #lazy";
preg_match_all('/#(\w+)/', $str, $matches);
array_walk($matches[1],function (&$v){ $v='#'.$v;});
print_r($matches[1]);

OUTPUT :

Array
(
    [0] => #fox
    [1] => #dog
    [2] => #lazy
)

Answer 2

Here it is:

$s = "a quick brown fox over the lazy dog... #fox #dog. hello everybody #lazy";
$r = array();
preg_match_all('/(?<!\w)#\w+/', $s,$r);
print_r($r);

Answer 3

using the regex whith preg_match_all you get a single array with all words starting with # contained in the string.

$str  = "a quick brown fox over the lazy dog... #fox #dog. hello everybody #lazy";
$pattern = '/(?<!\w)#\w+/';
preg_match_all($pattern, $str , $matches);
print_r($matches);