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Definition and Usage. The substr () function returns a part of a string. Syntax. substr (string,start,length) Parameter Values. Technical Details. More Examples. Example. Using the start parameter with different positive and negative numbers: <?php. echo substr ("Hello world",10)."<br>"; echo substr ("Hello world",1)."<br>";
String Functions. Change language: substr. (PHP 4, PHP 5, PHP 7, PHP 8) substr — Return part of a string. Description ¶. substr (string $string, int $offset, ? int $length = null): string. Returns the portion of string specified by the offset and length parameters. Parameters ¶. string. The input string. offset.
8 Answers. Sorted by: 817. Use substr() with a negative number for the 2nd argument. $newstring = substr($dynamicstring, -7); From the php docs: string substr ( string $string , int $start [, int $length ] ) If start is negative, the returned string will start at the start'th character from the end of string. edited Jun 20, 2020 at 9:12.
- Introduction to The Php Substr() Function
- Php Substr() Function with Negative Offset
- Php Substr() Function with Negative Length
- The Php mb_substr() Function
- Summary
The substr() function accepts a stringand returns a substring from the string. Here’s the syntax of the substr()function: In this syntax: 1. $stringis the input string. 2. $offsetis the position at which the function begins to extract the substring. 3. $length is the number of characters to include in the substring. If you omit the $length argument...
The $offset argument can be a negative number. If the $offset is negative, the substr() function returns a substring that starts at the offset character from the end of the string. The last character in the input string has an index of -1. The following example illustrates how to use the substr()function with negative offset: In this example, the s...
Like the $offset argument, the $length argument can be negative. If you pass a negative number to the $length argument, the substr() function will omit a $lengthnumber of characters in the returned substring. The following example illustrates how to use the substr() with a negative $offset and $lengtharguments: The following picture illustrates how...
See the following example: This example attempts to extract a substring with one character in the $messagestring starting at index 3. However, it shows nothing in the output. The reason is that the $message string contains a non-ASCII character. Therefore, the substr()function doesn’t work correctly. To extract a substring from a string that contai...
Use the PHP substr()function to extract a substring from a string.Use the negative offset to extract a substring from the end of the string. The last character in the input string has an index of -1.Use the negative length to omit a length number of characters in the returned substring.Use the PHP mb_substr()function to extract a substring from a string with non-ASCII characters.Jun 22, 2023 · The substr() is a built-in function in PHP that is used to extract a part of string. Syntax: substr(string_name, start_position, string_length_to_cut) Parameters: The substr() function allows 3 parameters or arguments out of which two are mandatory and one is optional.
Jul 22, 2024 · The substr() function is used to extract a substring from a string in PHP. It takes three arguments: the input string, the starting position (zero-based index), and optionally the length of the substring to extract.
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Jul 23, 2024 · substr in PHP is a built-in function used to extract a part of the given string. The function returns the substring specified by the start and length parameter. It is supported by PHP 4 and above. Let us see how we can use substr () to cut a portion of the string.
