Stop Words are words which do not contain important significance to be used in Search Queries. Most search engine filters these words from search query before performing search, this improves performance.
Mysql full-text search also fillers some stop words which can be found in the storage/myisam/ft_static.c file. See List of Mysql Stop word
We have created the list of English stop words to use in Keywords Density Checker tool.
List of English Stop words
a, able, about, across, after, all, almost, also, am, among, an, and, any, are, as, at, be, because, been, but, by, can, cannot, could, dear, did, do, does, either, else, ever, every, for, from, get, got, had, has, have, he, her, hers, him, his, how, however, i, if, in, into, is, it, its, just, least, let, like, likely, may, me, might, most, must, my, neither, no, nor, not, of, off, often, on, only, or, other, our, own, rather, said, say, says, she, should, since, so, some, than, that, the, their, them, then, there, these, they, this, tis, to, too, twas, us, wants, was, we, were, what, when, where, which, while, who, whom, why, will, with, would, yet, you, your, ain't, aren't, can't, could've, couldn't, didn't, doesn't, don't, hasn't, he'd, he'll, he's, how'd, how'll, how's, i'd, i'll, i'm, i've, isn't, it's, might've, mightn't, must've, mustn't, shan't, she'd, she'll, she's, should've, shouldn't, that'll, that's, there's, they'd, they'll, they're, they've, wasn't, we'd, we'll, we're, weren't, what'd, what's, when'd, when'll, when's, where'd, where'll, where's, who'd, who'll, who's, why'd, why'll, why's, won't, would've, wouldn't, you'd, you'll, you're, you've
Stop Word’s PHP array
<?
$StopWords=array("a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your","ain't","aren't","can't","could've","couldn't","didn't","doesn't","don't","hasn't","he'd","he'll","he's","how'd","how'll","how's","i'd","i'll","i'm","i've","isn't","it's","might've","mightn't","must've","mustn't","shan't","she'd","she'll","she's","should've","shouldn't","that'll","that's","there's","they'd","they'll","they're","they've","wasn't","we'd","we'll","we're","weren't","what'd","what's","when'd","when'll","when's","where'd","where'll","where's","who'd","who'll","who's","why'd","why'll","why's","won't","would've","wouldn't","you'd","you'll","you're","you've");
?>
Stop Word’s JSON array
["a","able","about","across","after","all","almost","also","am","among","an","and","any","are","as","at","be","because","been","but","by","can","cannot","could","dear","did","do","does","either","else","ever","every","for","from","get","got","had","has","have","he","her","hers","him","his","how","however","i","if","in","into","is","it","its","just","least","let","like","likely","may","me","might","most","must","my","neither","no","nor","not","of","off","often","on","only","or","other","our","own","rather","said","say","says","she","should","since","so","some","than","that","the","their","them","then","there","these","they","this","tis","to","too","twas","us","wants","was","we","were","what","when","where","which","while","who","whom","why","will","with","would","yet","you","your","ain't","aren't","can't","could've","couldn't","didn't","doesn't","don't","hasn't","he'd","he'll","he's","how'd","how'll","how's","i'd","i'll","i'm","i've","isn't","it's","might've","mightn't","must've","mustn't","shan't","she'd","she'll","she's","should've","shouldn't","that'll","that's","there's","they'd","they'll","they're","they've","wasn't","we'd","we'll","we're","weren't","what'd","what's","when'd","when'll","when's","where'd","where'll","where's","who'd","who'll","who's","why'd","why'll","why's","won't","would've","wouldn't","you'd","you'll","you're","you've"]