PHP Learning log (3)-echo&print

In PHP, there are two ways to output a result: Echo and print, which will be compared in two ways.

The difference between Echo and print:

	Echo	Print
Continuous output string	Ability to output multiple strings consecutively	Only one string can be output
return value	No	Returns 1
Usage	echo or Echo ()	Print or print ()

(1) Echo can output multiple strings consecutively, print can only output one string:

Example 1:

<?PHP/*echo can output multiple strings consecutively, print can only output one string*/Echo"Echo Outputs a string:";Echo"Hello,world";//echo outputs a stringEcho"<br/>";Echo"Echo Outputs Multiple strings:";Echo"Hello,world", "hello,php", "Hello,python";//echo Output multiple stringsEcho"<br/>";Print"Print output a string:";Print"Hello,world";//print output A stringPrint"<br/>";/*start-"Print continuous output of multiple strings"-start*/

Print "Print output multiple strings:"; Print "Hello,world", "hello,php", "Hello,python";  // print output multiple strings, error prompt: Parse error:syntax error, unexpected ', ' in c:\users\13842\phpstormprojects\test\print& echo.phpon line +/*end-"Print continuous output multiple strings"-end*/print "<br/>"  ;? >

Block "Print continuous output multiple strings" code, the result is as follows:

If you do not block the code "Print continuous output multiple strings", an error (syntax error) occurs:

(2) Echo no return value, print always returns 1

<? PHP /* Print returns 1,echo no return value */ $print _value=print "hello,world<br/>";  // results: Hello,world Print "Return value is $print _value";   // Result: The return value is 1 $echo _value=echo "hello,world<br/>";   // A syntax error has occurred ?>

(3) The output mode, with brackets and without brackets is no different, there is no explanation.

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PHP Learning log (3)-echo&print