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The difference between PHP single and double quotes _php tips

1. Define String    In PHP, a string can be defined using single quotes or double quotes. However, you must use the same single or double quotes to define the string, such as: ' Hello ' and ' hello ' are illegal string definitions. When you define

The difference between single quotation marks and double quotes in PHP

The difference between single quotation marks and double quotes in PHP In a programming language, both single and double quotes are important, as is the case in the PHP language. Compared to ASP, PHP quotation marks better use, in ASP, to put the

The difference between single quotation marks and double quotes in PHP

The difference between single quotation marks and double quotes in PHP In a programming language, both single and double quotes are important, as is the case in the PHP language. Compared to ASP, PHP quotation marks better use, in ASP, to put the

The difference between PHP single and double quotes

Original address: http://wenku.baidu.com/view/3e6a238271fe910ef12df806 "The distinction and usage of single and double quotes." Now the answer is summed up, written in this small essay. The fields inside the double quotes are interpreted by the comp

Introduction to the difference and usage of single and double quotes in PHP

In PHP, a string is usually defined in a pair of quotes Follow these steps: The code is as follows Copy Code $out = str_replace (Array (' RN ', ' r ', ' n '), ', $out); PHP provides three ways to define strings: single q

The difference between single quotes, double quotes, inverted quotes, and backslashes in a Linux shell _linux shell

1. Single quotation mark (') # grep Susan Phonebook Susan Goldberg 403-212-4921 Susan Topple 212-234-2343 If we're looking for Susan Goldberg and can't use the grep Susan Goldberg Phonebook command directly, grep treats Goldberg and phonebook as fi

The difference between single quotes, double quotes, and inverted quotes in the shell (from the Internet)

The shell can recognize 4 different types of caret symbols: single quote character ' double quote character ' backslash character \ Inverted quote character ' 1. Single quotation mark (') # grep Susan Phonebook Susan Goldberg 403-212-4921 Susan Top

Single quotes and double quotes in PHP

Label:One, the quotation mark defines the stringIn PHP, typically a string is defined in a pair of quotation marks, such as:' I am a string in single quotes '"I am a string in double quotes"  The PHP parser uses pairs of quotes to determine a string.

The difference between single quotes, double quotes, anti-quotes, and backslashes in the shell

Tags: input example code assignment use class between scan meaning1. Single quotation mark (')grep403-212-4921212-234-2343If we're looking for Susan Goldberg and can't use the grep Susan Goldberg Phonebook command directly, GREP will treat Goldberg

Back quotes, single quotes, double quotes in the Linux Shell

Label:Anti-QuoteThe anti-quote bit (') is located above the TAB key of the keyboard, to the left of the 1 key. Note the difference between the single quotation mark (') on the left side of the ENTER key.Plays the role of command substitution in

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