Check string contains two or more exact words by regex

Asked Aug 16 '19 at 07:05

Active Aug 16 '19 at 07:05

Viewed 27 times

I have list of words that needs to check is exact available or in string. Also words may be case sensitive.

For e.g. 1

Hello world how are

I tried,

$url      = "Hello world how are you ?";
$haystack = "Hello|world|how|are";
$check    = (preg_match("({$haystack})", $url) === 1);
var_dump($check);

Output

true

Try it online!

This example checks like or operator.

For e.g. 2

strpos().

$url      = "Hello world how are you ?";
$check    = (strpos($url, "Hello") >= 0 && strpos($url, "world") && strpos($url, "how") && strpos($url, "are"));
var_dump($check);

Output

true

Try it online!

This example working but not check exact match try to change first Hello word to hellosssss it shows always true.

So, any preferable way to check all words exactly and also with case sensitive.

Note : This example shows only few words but I have many words.

asked Aug 16 '19 at 07:05

Jaydeep Mor

1,690
3
21
39

So you want to get true if all the words on your list are present as whole words in any order in a string? – Wiktor Stribiżew Aug 16 '19 at 07:09
@WiktorStribiżew yes. – Jaydeep Mor Aug 16 '19 at 07:09
What about split haystack and foreach ? – MorganFreeFarm Aug 16 '19 at 07:13
`/^(?=.*\bHello\b)(?=.*\bworld\b)(?=.*\bhow\b)(?=.*\bare\b)/` – Wiktor Stribiżew Aug 16 '19 at 07:13
@WiktorStribiżew I tried `preg_match("(^(?=.*\Hello\b)(?=.*\world\b)(?=.*\how\b)(?=.*\are\b).+)", $url)` but return `0`. – Jaydeep Mor Aug 16 '19 at 07:19
@WiktorStribiżew can you please explain with `PHP` ? – Jaydeep Mor Aug 16 '19 at 07:19
Of course your code returns 0, you did not use the suggested pattern. You corrupted word boundary constructs. Why escape `a`, `h` or `H`? See https://3v4l.org/o726O – Wiktor Stribiżew Aug 16 '19 at 07:22
@WiktorStribiżew Ohh ! I was forgot `\b` word boundry. Many thanks it is working. – Jaydeep Mor Aug 16 '19 at 07:25

Check string contains two or more exact words by regex

0 Answers0