Detailed introduction to the len() function

This article mainly briefly introduces the use of the len() function in Python, including small examples of use in four situations. It is the basic knowledge of Python learning. Friends in need can refer to the following function: len() 1: Function: Return the length of string, list, dictionary, tuple, etc. 2: Syntax: len(str) 3: Parameter: str: String, list, dictionary, tuple, etc. to be calculated 4: Return value: String , the length of elements such as lists, dictionaries, and tuples 5: Example 5.1. Calculate the length of the string: >>> s = "hello good boy doiido" >>> len(s) 215.2. Calculate the number of elements in the list:>>> l = ['h','e','l','l','o']

1. Summary of usage examples of len() function in Python

##Introduction: This article mainly introduces briefly This article explains the use of the len() function in Python, including small examples of use in four situations. It is the basic knowledge for learning Python. Friends who need it can refer to

2. PHP Get String Length Function strlen() Function

##Introduction: Register on some websites or In other activities, we need users to submit some information, and there will be certain requirements for this information. For example, there are some restrictions on the length of user registration information, which cannot be less than or greater than this. Here we need to use PHP's own functions to perform the acquisition operation.

3.

Briefly talk about the strlen function in PHP

##Introduction: In PHP, the function strlen() returns the length of the string. The strlen() function returns the length of bytes occupied by the string. An English letter, number, and various symbols all occupy one byte. They The lengths are all 1

4.

PHP string length calculation - introduction to the use of strlen() function

Introduction: In PHP, the function strlen() returns the length of the string. The strlen() function returns the length of bytes occupied by the string, an English letter, number, Each symbol occupies one byte, and their length is 1

5.

Briefly talk about the strlen function in PHP

#Introduction: In PHP, the function strlen() returns the length of the string, and the strlen() function returns the length of bytes occupied by the string, a English letters, numbers, and various symbols all occupy one byte, and their length is 1

6.

PHP string length calculation - introduction to the use of strlen() function

#Introduction: In PHP, the function strlen() returns the length of the string, and the strlen() function returns The length of bytes occupied by a string, each English letter, number, and various symbols occupies one byte, and their length is 1

##7. Let’s talk briefly strlen function in PHP

Introduction: In PHP, the function strlen() returns the length of the string, The strlen() function returns the length of bytes occupied by the string. Each English letter, number, and various symbols occupy one byte, and their lengths are all 1

8. php determines the string length strlen() and mb_strlen() functions

Introduction: strlen() PHP strlen() function Definition and usage The strlen() function returns the length of the string. Syntax strlen(string) Parameters: string Description: Required. Specifies the string to check. The code is as follows � ...

9. varchar php determines that the input does not exceed the length range of the varchar field of mysql

Introduction: varchar:varchar PHP determines that the input does not exceed the length range of the varchar field of mysql: but if it is encoded in utf-8, a Chinese character occupies 3 characters in length, such as the string $str=”Hello!! "; If you use the strlen function to judge, the length is 11, which just exceeds the length of varchar, but in fact this is not the case. If you directly execute the insert statement in phpmyadmin, this string can be inserted! For the database, its length is 5, so how do we use PHP to get this length? Use the iconv_strlen() function! echo iconv

10. String array 10 simple methods for PHP string processing

Introduction: String Array: String array 10 simple methods for PHP string processing: 1. Determine the length of a string This is the most obvious example in the article. The question is how do we determine the length of a string? Here we cannot Not to mention is the strlen() function: Copy the code as follows: $text = "sunny day"; $count = strlen($text); // $count = 9 2. Intercept the text and create a summary news website, usually A paragraph of about 200 words will be intercepted and an ellipsis will be added at the end of the paragraph to form a summary

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