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In PHP, a string is usually defined in a pair of quotation marks.Follow these steps: The code is as follows:Copy code $ Out = str_replace (array ('RN ', 'R', 'n'), '', $ out); PHP provides three methods to define strings: single quotes, double
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
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"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
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
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.
Fields in double quotation marks are interpreted by the compiler and then output as HTML code. The single quotes are output directly without explanation. For example: $ abcmynameistome; echo $ abc: mynameistomecho $ abc: $ abcecho $ abc: mynameistom
In PHP, we can use single quotes or double quotation marks to represent strings. However, as developers, we should understand the differences. Single quotation marks and double quotation marks can parse variables for defining characters, and
"" Fields in double quotation marks are interpreted by the compiler and then output as HTML code.''Is output directly without being interpreted in single quotes.For example:
$ Abc = 'My name is tome '; echo $ ABC // The result is: My name is tomecho'
In PHP, the definition of a string can be in English single quotes ', or you can use double quotes in English.
But you must use the same single or double quotes to define strings, such as ' Hello World ' and ' Hello World ' for illegal string
Single quotation marks and double quotation marks can parse variables for defining characters, and directly output variables. at the same time, single quotation marks and double quotation marks must be superior to double quotation marks in character
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