How to increase php string by 1

How to increase php string by 1: 1. Create a new php sample file; 2. Create the "function inc($s) {...}" method; 3. Pass "while ($n-- > 0) {$s = inc($s);}" Calculate the string except the last character, and then carry.

The operating environment of this tutorial: Windows 10 system, PHP version 8.1, DELL G3 computer

How to increase the php string by 1 ?

php Numeric string 1 operation accumulates and adds one (no overflow)

* inc.php

 0) { // printf("%s\n", $s); $s = inc($s); } printf("%s\n", $s); // "2147493647"

Recursion, if carry is needed , first calculate the string excluding the last character, and set the last character to '0'; single numeric characters 0-9 are obviously easy to handle.

* test:

 0) { // printf("%d\n", $m); $m++; } printf("%d\n", $m);

The comparison results are consistent

* add2.php // Traverse 1-4 uppercase letters

      

      
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