find exact word in a var string in PHP [closed] - php

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i'm trying to find an exact word inside a string.
example:
$word = "Many Blocks";
if (strpos($word, "Block")){
echo "You found 1 Block";
}
if (strpos($word, "Blocks")){
echo "You found many Blocks";
}
The problem here is both if are true.. and i need to find only if is the same word..

Answer 1

As Jay Blanchard says you need to do it with regex in following way:--
$word = "Many Blocks";
if ( preg_match("~\bBlocks\b~",$word) )
echo "matched";
else
echo "no match";

Answer 2

Your code would work with an offset on the second search and a few other changes.
$result = 'You found no blocks';
$position = strpos($word, "Block");
if ($position !== false){
$result = "You found 1 Block";
if (strpos($word, "Blocks",$position + 1)){
$result = "You found many Blocks";
}
}
echo $result;
by using the strpos() offset you can keep looping through until the word is no longer found.
$found = 0;
$offset = 0;
while(true){
$position = strpos($word,'Block',$offset );
if ($position === false){break;}
$found++;
$offset = $position + 1; // set offset just beyond the current found word
}
echo "Found: $found";
or
This one the code is simple but is slower:
preg_match_all('/Blocks/',$word,$matches);
$found = count($matches[1]);

Answer 3

You can do it with regex like this:
if(preg_match("/Block(\s|$|\.|\,)/", $string))
This looks for the word "Block" followed by space or dot or comma or end of string.