Many situations we want to be able to detect if a post/comment is spam by checking to see if it contains a list of spam/forbidden words. The following provides a PHP function spamCheck which takes the content and will return true if the text contains any of the forbidden words.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | <?php $SPAMWORDS = [ "SpamWord1", "SpamWord2", ]; function containsWord($str, $word) { return !!preg_match('#\\b' . preg_quote($word, '#') . '\\b#i', $str); } function spamCheck($content) { global $SPAMWORDS; foreach ($SPAMWORDS as $w) { if (containsWord($content, $w)) { return true; } } return false; } |
<?php
$SPAMWORDS = [
"SpamWord1",
"SpamWord2",
];
function containsWord($str, $word) {
return !!preg_match('#\\b' . preg_quote($word, '#') . '\\b#i', $str);
}
function spamCheck($content) {
global $SPAMWORDS;
foreach ($SPAMWORDS as $w) {
if (containsWord($content, $w)) {
return true;
}
}
return false;
}We can define the list of spam words, and the text searching is based on regex (regular expression) – and it will match the word boundary only meaning the “HelloWorld” won’t match word “Hello” or “World” but “Hello World” will match.
–EOF (The Ultimate Computing & Technology Blog) —
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