Question: How do I reverse a string in PHP?

How can I reverse a string without using Strrev in PHP?

How to Reverse a String in PHP without using strrev function

  1. Assign the given string to the variable.
  2. Calculate the length of the string.
  3. Declare a variable in which you have to store the reversed string.
  4. Iterate the string using for loop with appropriate looping and count.
  5. Concatenate the string inside the for loop.

How do you reverse a string manually?

Strings can be reversed using slicing. To reverse a string, we simply create a slice that starts with the length of the string, and ends at index 0. The slice statement means start at string length, end at position 0, move with the step -1 (or one step backward).

Can you use reverse () on a string?

These features allow you to use slicing to directly generate a copy of a given string in reverse order. The second option is to use the built-in function reversed() to create an iterator that yields the characters of an input string in reverse order.

Reversing Strings Through Slicing.

Offset Default Value
step 1

How do I reverse a string?

Different ways to find the reverse of a string in the C

  1. Reverse a string using the strrev() function.
  2. Reverse a string without using the library function.
  3. Reverse a string using the recursion function.
  4. Reverse a string using for loop.
  5. Reverse a string using while loop.
  6. Reverse a string using pointers.
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What is PHP call function?

A PHP function provides code that a PHP script can call to perform a task, such as Count(), file_get_contents(), and header(). The PHP language supports both procedural and object-oriented programming paradigms.

What will strstr () function do?

The strstr() function returns pointer to the first occurrence of the matched string in the given string. It is used to return substring from first match till the last character. Syntax: char *strstr(const char *string, const char *match)

What is Strrev PHP?

The strrev() function is a built-in function in PHP and is used to reverse a string. … If a number is passed to it instead of a string, it will also reverse that number. Return Value: The strrev() function returns the reversed string or the number.

How do I reverse a loop in PHP?

Introduction to Reverse String in PHP

  1. At first, assigning the string to the variable.
  2. Now calculate the string length.
  3. Now create a new variable in order to store the reversed string.
  4. Then Proceed with the loop like for loop, while loop and do while loop etc..
  5. Concatenating the string inside of the loop.

How do I reverse a String in StringBuilder?

Example 1

  1. public class StringBuilderReverseExample1 {
  2. public static void main(String[] args) {
  3. StringBuilder sb = new StringBuilder(“programming”);
  4. System.out.println(“string = ” + sb);
  5. // reversing of stringbuilder.
  6. System.out.println(“reverse = ” + sb.reverse());
  7. }
  8. }

How do you reverse a number?

How to reverse a number mathematically.

  1. Step 1 — Isolate the last digit in number. lastDigit = number % 10. …
  2. Step 2 — Append lastDigit to reverse. reverse = (reverse * 10) + lastDigit. …
  3. Step 3-Remove last digit from number. number = number / 10. …
  4. Iterate this process. while (number > 0)
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