<?php
namespace Stringy;
if (!function_exists('Stringy\create')) {
/**
* Creates a Stringy object and returns it on success.
*
* @param mixed $str Value to modify, after being cast to string
* @param string $encoding The character encoding
* @return Stringy A Stringy object
* @throws \InvalidArgumentException if an array or object without a
* __toString method is passed as the first argument
*/
function create($str, $encoding = null)
{
return new Stringy($str, $encoding);
}
}Strings are mainly used for programming. See the text for concept explanations, function explanations, and usage details. Here is an additional point: strings are similar to character arrays in storage, so each of its individual elements can be extracted. For example, s="abcdefghij", then s[1]="a", s[10]="j", and the zero position of the string is its length, such as s[0]=10 (※ The above function Ansistring No.), which can provide us with a lot of convenience. For example, each bit can be converted into a number and stored in an array during high-precision operations.
A string or string (String) is a string of characters composed of numbers, letters, and underscores. Generally recorded as s=“a1a2···an” (n>=0). It is a data type that represents text in programming languages. In programming, a string is a continuous sequence of symbols or values, such as a symbol string (a string of characters) or a binary digit string (a string of binary digits).
Usually the entire string is used as the operation object, such as: finding a substring in the string, obtaining a substring, inserting a substring at a certain position in the string, deleting a substring, etc. The necessary and sufficient conditions for two strings to be equal are: the lengths are equal, and the characters at each corresponding position are equal. Assume that p and q are two strings. The operation of finding the position where q first appears in p is called pattern matching. The two most basic storage methods of strings are sequential storage and linked storage.
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