We will use the pattern //i to check for a specific word. $offset optional This parameter tells about the start position of the matching process. We have two flags for this parameter: PREG_OFFSET_CAPTURE and PREG_UNMATCHED_AS_NULL. $flag optional This parameter specifies the flags. $matches optional This parameter stores the result of the matching process in it. $string mandatory It is the string that we will search in the original string. The detail of its parameters is as follows Parameters Description $regexPattern mandatory It is the pattern which we will search in the original string. The function preg_match() accepts five parameters. The correct syntax to use this function is as follows: preg_match($pattern, $inputString, $matches, $flag, $offset) This function uses regular expressions to match patterns. The strcontains () function returns true if the needle is in the haystack, false otherwise. needle is the substring to search for in the input string haystack. In PHP, we can also use the preg_match() function to check if a string contains a specific word. The strcontains () function has the following parameters: haystack is the string to be checked. Use the preg_match() Function to Check if a String Contains a Substring in PHP The output has shown False because the string that we searched was before the offset. so lets see bellow both example will help. I will give you both example so you can easily use in your controller method. contains () take a two argument one should be string and another will be string or array. If we pass the $offset parameter, the function will start the search from the specified location. Str class has contains () method that will provide to check string contains in laravel application. Python Program to Check a String and Number is Palindrome Or Not The program below shows how we can use the strpos() function to check if a string contains a substring. This function returns the position of the substring relative to the position of the original string. $offset optional It’s the start position of the search process if the offset is negative, the search process will start from the end. $checkString mandatory It’s the string that we want to check in the $checkString. The built-in function strpos() has three parameters, which are discussed below: Parameters Description $originalString mandatory It’s the string that we want to check for the substring. This command checks the occurrence of a passed substring the correct syntax to execute this is as follows: strpos($originalString, $checkString, $offset) We will use the built-in function strpos() to check if a string contains a substring. Use the strpos() Function to Check if a String Contains a Substring in PHP This article will introduce different methods to check if a string contains a substring in PHP using the strpos() and preg_match() functions.
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