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

Question

I want an if statement that uses same thingy like mysql something LIKE '%something%'
I want to build an if statement in php.
if ($something is like %$somethingother%)
Is it possible?
The reason for me asking this question is that I don't want to change the MySQL command, it's a long page with many stuff on it, I don't want to build a different function for this.
Let me know if this is possible, if possible then how to do it .

Answer 1

if ($something is like %$somethingother%)
Is it possible?
no.
I don't want to change the MySQL command, it's a long page with many stuff on it
Use some good editor, that supports regular expressions in find & replace, and turn it to something like:
if(stripos($something, $somethingother) !== FALSE){
}

Answer 2

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

Answer 3

look on strstr function

Answer 4

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
}

Answer 5

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

Answer 6

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

Answer 7

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'

Answer 8

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.

Answer 9

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

Answer 10

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.

Answer 11

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() :)