Check if a string contains a word

How do I check if a string contains a specific word?

$a = 'Hello world?';

if (strpos($a, 'Hello') !== false) { //PAY ATTENTION TO !==, not !=
    echo 'true';
}
if (stripos($a, 'HELLO') !== false) { //Case insensitive
    echo 'true';
}

Source: stackoverflow.com

If word exist in string

$a = 'How are you?';

if (strpos($a, 'are') !== false) {
    echo 'true';
}

Source: stackoverflow.com

Check if a string contains a word

//By far the most accurate: VIA https://stackoverflow.com/a/25633879/7596555
function containsWord($str, $word)
{
    return !!preg_match('#\\b' . preg_quote($word, '#') . '\\b#i', $str);
}

Similar codes

40 votes170 views5 answers
Print date in php
PHP
1 vote190 views1 answer
Command "make:controller" is not defined.
PHP
0 vote180 views1 answer
Laravel mixed content error
PHP
0 vote247 views1 answer
Nginx phpmyadmin subdirectory
PHP
0 vote294 views1 answer
Befreie den WordPress-Header von unnötigen Einträgen
PHP Wordpress
0 vote230 views1 answer
Yii2 OAuth2
PHP Yii
3 votes209 views3 answers
Add seconds to datetime php
PHP
32 votes184 views6 answers
Implode php
PHP
3 votes191 views2 answers
Acf options repeater
PHP
0 vote210 views4 answers
Move uploaded file in php
PHP