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This article introduces the relevant knowledge of "what are the output commands that are not php". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Write command is not the output command of php, there are two basic output modes in php, the output command is echo and print,echo can output one or more strings, while print allows only one string, and the return value is always 1.

This article operating environment: Windows7 system, PHP7.1, Dell G3 computer.

What command is not an output command of php?

The write command is not an output command for php.

There are two basic output modes in PHP: echo and print.

Note: the printf () function outputs the formatted string.

PHP echo and print statements

The difference between echo and print:

Echo-can output one or more strings

Print-only one string is allowed to be output, and the return value is always 1

Tip: the output speed of echo is faster than that of print. Echo does not return a value, while print has a return value of 1.

PHP echo statement

Echo is a language structure that can be used without parentheses or with parentheses: echo or echo ().

Display string

The following example demonstrates how to use the echo command to output a string (a string can contain a HTML tag):

Example

Display variable

The following example shows how to use the echo command to output variables and strings:

Example

PHP print statement

Print is also a language structure, with or without parentheses: print or print ().

Display string

The following example demonstrates how to use the print command to output a string (a string can contain a HTML tag):

Example

Display variable

The following example shows how to use the print command to output variables and strings:

Example

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