PHP Like thing similar to MySQL Like, for if statement?

I know, this question isn't actual but I've solved similar problem :)

My solution:

/** * SQL Like operator in PHP. * Returns TRUE if match else FALSE. * @param string $pattern * @param string $subject * @return bool */ function like_match($pattern, $subject) { $pattern = str_replace('%', '.*', preg_quote($pattern, '/')); return (bool) preg_match("/^{$pattern}$/i", $subject); } 

Examples:

like_match('%uc%','Lucy'); //TRUE like_match('%cy', 'Lucy'); //TRUE like_match('lu%', 'Lucy'); //TRUE like_match('%lu', 'Lucy'); //FALSE like_match('cy%', 'Lucy'); //FALSE 

look on strstr function

Use this function which works same like SQL LIKE operator but it will return boolean value and you can make your own condition with one more if statement

function like($str, $searchTerm) { $searchTerm = strtolower($searchTerm); $str = strtolower($str); $pos = strpos($str, $searchTerm); if ($pos === false) return false; else return true; } $found = like('Apple', 'app'); //returns true $notFound = like('Apple', 'lep'); //returns false if($found){ // This will execute only when the text is like the desired string } 

Use function, that search string in another string like: strstr, strpos, substr_count.

strpos() is not working for so i have to use this preg_match()

$a = 'How are you?'; if (preg_match('/\bare\b/', $a)) { echo 'true'; } 

like in this e.g i am matching with word "are" hope for someone it will be helpful

But you will have to give lowercase string then it will work fine. Example of strstr function:

$myString = "Hello, world!"; echo strstr( $myString, "wor" ); // Displays 'world!' echo ( strstr( $myString, "xyz" ) ? "Yes" : "No" ); // Displays 'No' 

If you have access to a MySQL server, send a query like this with MySQLi:

$SQL="select case when '$Value' like '$Pattern' then 'True' else 'False' end as Result"; $Result=$MySQLi->query($SQL)->fetch_all(MYSQLI_ASSOC)[0]['Result']; 

Result will be a string containing True or False. Let PHP do what it's good for and use SQL for likes.

I came across this requirement recently and came up with this:

/** * Removes the diacritical marks from a string. * * Diacritical marks: {@link https://unicode-table.com/blocks/combining-diacritical-marks/} * * @param string $string The string from which to strip the diacritical marks. * @return string Stripped string. */ function stripDiacriticalMarks(string $string): string { return preg_replace('/[\x{0300}-\x{036f}]/u', '', \Normalizer::normalize($string , \Normalizer::FORM_KD)); } /** * Checks if the string $haystack is like $needle, $needle can contain '%' and '_' * characters which will behave as if used in a SQL LIKE condition. Character escaping * is supported with '\'. * * @param string $haystack The string to check if it is like $needle. * @param string $needle The string used to check if $haystack is like it. * @param bool $ai Whether to check likeness in an accent-insensitive manner. * @param bool $ci Whether to check likeness in a case-insensitive manner. * @return bool True if $haystack is like $needle, otherwise, false. */ function like(string $haystack, string $needle, bool $ai = true, bool $ci = true): bool { if ($ai) { $haystack = stripDiacriticalMarks($haystack); $needle = stripDiacriticalMarks($needle); } $needle = preg_quote($needle, '/'); $tokens = []; $needleLength = strlen($needle); for ($i = 0; $i < $needleLength;) { if ($needle[$i] === '\\') { $i += 2; if ($i < $needleLength) { if ($needle[$i] === '\\') { $tokens[] = '\\\\'; $i += 2; } else { $tokens[] = $needle[$i]; ++$i; } } else { $tokens[] = '\\\\'; } } else { switch ($needle[$i]) { case '_': $tokens[] = '.'; break; case '%': $tokens[] = '.*'; break; default: $tokens[] = $needle[$i]; break; } ++$i; } } return preg_match('/^' . implode($tokens) . '$/u' . ($ci ? 'i' : ''), $haystack) === 1; } /** * Escapes a string in a way that `UString::like` will match it as-is, thus '%' and '_' * would match a literal '%' and '_' respectively (and not behave as in a SQL LIKE * condition). * * @param string $str The string to escape. * @return string The escaped string. */ function escapeLike(string $str): string { return strtr($str, ['\\' => '\\\\', '%' => '\%', '_' => '\_']); } 

The code above is unicode aware to be able to catch cases like:

like('Hello 🙃', 'Hello _'); // true like('Hello 🙃', '_e%o__'); // true like('asdfas \\🙃H\\\\%🙃É\\l\\_🙃\\l\\o asdfasf', '%' . escapeLike('\\🙃h\\\\%🙃e\\l\\_🙃\\l\\o') . '%'); // true 

You can try all of this on https://3v4l.org/O9LX0

I think it's worth mentioning the str_contains() function available in PHP 8 which performs a case-sensitive check indicating whether a string is contained within another string, returning true or false.

Example taken from the documentation:

$string = 'The lazy fox jumped over the fence'; if (str_contains($string, 'lazy')) { echo "The string 'lazy' was found in the string\n"; } if (str_contains($string, 'Lazy')) { echo 'The string "Lazy" was found in the string'; } else { echo '"Lazy" was not found because the case does not match'; } //The above will output: //The string 'lazy' was found in the string //"Lazy" was not found because the case does not match 

See the full documentation here.

like_match() example is the best this one witch SQL reqest is simple (I used it before), but works slowly then like_match() and exost database server resources when you iterate by array keys and every round hit db server with request usually not necessery. I made it faster ferst cutting / shrink array by pattern elements but regexp on array works always faster. I like like_match() :)