A detailed description of the Len () function

This article mainly introduces the use of the Len () function in Python, including the use of small examples in four cases, is the basic knowledge of Python learning, the need for friends can refer to the following function: Len () 1: function: Return string, list, dictionary, tuple, etc. length 2: syntax: len (str) 3: Parameter: str: string, list, dictionary, tuple, etc. to be computed 4: return value: String, list, dictionary, tuple, and other elements of length 5: instance 5.1, length of the computed string:>>> s = "Hello good boy Doiido" > >> Len (s) 215.2, count the number of elements in the list:>>> L = [' h ', ' e ', ' l ', ' l ', ' O ']

1. Summarize the use instances of the Len () function in Python

Introduction: This article mainly briefly describes the use of the Len () function in Python, including the use of small examples in four cases, is the basic knowledge of Python learning, the need for friends can refer to the following

2. PHP gets the string length function strlen () function

Introduction: In some Web site registration or other activities, we need users to submit some information, for this information will have certain requirements, such as user registration information Some of the limit length can not be less than how much. Here we need to use PHP's own function to get the operation.

3. Simply talk about the strlen function in PHP

Summary: In PHP, the function strlen () returns the length of the string, the strlen () function returns the byte length of the string, an English letter, a number, and a variety of symbols, all of which have a byte length of 1

4. PHP string length calculation-strlen () Function Usage Introduction

Summary: In PHP, the function strlen () returns the length of the string, the strlen () function returns the byte length of the string, an English letter, a number, and a variety of symbols, all of which have a byte length of 1

5. Simply talk about the strlen function in PHP

Summary: In PHP, the function strlen () returns the length of the string, the strlen () function returns the byte length of the string, an English letter, a number, and a variety of symbols, all of which have a byte length of 1

6. PHP string Length calculation-strlen () Function Usage Introduction

Summary: In PHP, the function strlen () returns the length of the string, the strlen () function returns the byte length of the string, an English letter, a number, and a variety of symbols, all of which have a byte length of 1

7. Simply talk about the strlen function in PHP

Summary: In PHP, the function strlen () returns the length of the string, the strlen () function returns the byte length of the string, an English letter, a number, and a variety of symbols, all of which have a byte length of 1

8. PHP Judgment String length strlen () and Mb_strlen () function

Summary: strlen () PHP strlen () function definition and usage the strlen () function returns the length of the string. Syntax strlen (string) parameter: String Description: Required. Specifies the string to check. The code is as follows ...

9. VarChar PHP judgment input does not exceed the length range of the MySQL varchar field

Summary: Varchar:varchar PHP determines that the input does not exceed the length range of the MySQL varchar field: But if the Utf-8 code, a Chinese character is 3 characters long, such as the string $str= "Hello Ah!!"; If you use the Strlen function to judge that the length is 11, just over the length of the varchar, but in fact it is not so, if directly into the phpMyAdmin inside the INSERT statement, this string can be inserted! For a database, its length is 5, then how do we use PHP to get this length? Use the Iconv_strlen () function! Echo Iconv

10.10 simple methods for string array PHP string processing

Synopsis: String array: string array php string processing 10 simple methods: 1. Determine the length of a string this is the most obvious example of the article, the question is how we determine the length of a string, here we cannot but mention is the strlen () function: Copy code code is as follows: $text = "Sunny Day"; $count = strlen ($text); $count = 9 2. Capture text, create a summary news-based web site usually intercepts a paragraph about 200 words, and adds an ellipsis to the end of the paragraph to form a summary