Course Intermediate 3844
Course Introduction:Digital signature generation and verification principles, AES and RSA encryption and decryption
Course Intermediate 12731
Course Introduction:PHP is the most popular server-side programming language in the world. According to statistics in 2018, more than 70% of the world’s websites are running PHP programs. Therefore, learning and mastering PHP programming is the fastest and most basic skill for you to work in the Internet industry. one
Course Elementary 15102
Course Introduction:Starting from scratch, we take the modular practical development of a very large CMS website management system as a learning guide to learn and flexibly master various knowledge points involved in PHP development.
Course Elementary 28821
Course Introduction:Starting from scratch, we take the modular practical development of a very large CMS website management system as a learning guide to learn and flexibly master various knowledge points involved in PHP development.
Course Elementary 20293
Course Introduction:Starting from scratch, we take the modular practical development of a very large CMS website management system as a learning guide to learn and flexibly master various knowledge points involved in PHP development.
Problems with nested single quotes and double quotes
2017-10-24 23:35:26 0 3 2185
The difference between single quotes and double quotes
2022-09-22 11:01:08 0 2 2876
2019-03-03 18:53:18 0 0 1246
2017-08-13 15:41:18 0 2 1524
What is the difference between single and double quoted strings in PHP?
2023-08-23 20:46:33 0 2 715
Course Introduction:The difference between single and double quotation marks in C language: character constants: single quotation marks represent a single character, and double quotation marks cannot be used. String constants: Double quotes represent strings, single quotes cannot be used. Escape characters: Escape characters take effect within single quotes, but not within double quotes. Nesting: Double quotes can be nested within single quotes and vice versa.
2024-04-27 comment 0 1174
Course Introduction:In Oracle Database, double quotes quote object identifiers (such as table names), and single quotes define string literals. Single quotes in single-quoted strings need to be escaped, are case-sensitive, and cannot be spliced; double-quoted strings are not case-sensitive and can be spliced.
2024-05-07 comment 0 584
Course Introduction:Double quotes and single quotes are used to surround string values in Oracle. The main differences are: Purpose: Single quotes are used for string literals, while double quotes are used for database object names, single-quoted literals, and case-sensitive identifiers. Identifier naming: case-insensitive within single quotes, case-sensitive within double quotes. Escape characters: The escape characters must be escaped with backslashes within single quotes, but they do not need to be escaped within double quotes.
2024-05-07 comment 0 522
Course Introduction:In Oracle, single quotes are mainly used to define string values and identifiers, while double quotes provide functions such as escape character processing, identifier conflict resolution, and string concatenation: Escape character processing: Double quotes allow the use of escape characters, Single quotes cannot. Identifiers: Single quotes are used for object names, double quotes are used for object names that conflict with keywords. String concatenation: Double quotes concatenate strings and the escaped characters they contain, while single quotes only concatenate the string value itself. Comments: Double quotes can be used for inline comments, but single quotes cannot.
2024-05-07 comment 0 370
Course Introduction:The main difference between single quotes and double quotes in PHP is variable parsing and escape character handling. Single quotes do not parse variables or escape characters, while double quotes parse variables and allow escape characters. In addition, double quotes support Heredoc and Nowdoc syntax, while single quotes do not.
2024-04-26 comment 0 1075