![]() ![]() We can also specify the length of the substring, and this parameter is optional. This function allows us to extract the string from the given string by specifying the position at which the function begins to extract the substring. To extract the substring from the input string, PHP offers an in-built feature substr() function. In this lesson, we have discussed how to extract substrings from the string in PHP. In the given example, we have specified the negative value for the length parameter within the substr() function. We can also specify the negative value for the length parameter. Tonight Example: Using substr() function with negative length ![]() The function returns the string which is at the seventh index from the end of the string. In the given example, we have specified the negative index for the extracted string. Studytonight Example: Using substr() function with negative value So the output string will start from the index 11 and end at the end of the string. In the even example, we have used the substr() function but do not specify the length of the extracted string. To Example: Using substr() function will default length argument The substring starts with the index 8 and the length of the string is 2. The two-arg substr() takes an input string and an offset indicating the starting. In the given example, we have used the substr() function to extract the substring from the input string. You can use the substr() function to extract a substring from a string. ![]() $length specifies the length of the extracted string. It specifies the position at which the function begins to extract the substring. $start specifies where to start the string the needs to be extracted. In the first parameter, we have to specify the input string and the second parameter specifies the position at which the function begins to extract the substring from the input string, and the third-string specifies the length of the characters that are to be extracted from the input string. Out of three parameters, the first two parameters are necessary to specify while the third one is optional. This function takes three parameters that are string, start length, and the length of the extracted string. This function is used to extract the substring from any given string. String Functions Change language: Submit a Pull Request Report a Bug strstartswith (PHP 8) strstartswith Checks if a string starts with a given substring Description strstartswith ( string haystack, string needle ): bool Performs a case-sensitive check indicating if haystack begins with needle. The substr() function is a pre-defined PHP function. ![]()
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