echo

Definition and usage

echo() function outputs one or more strings.

Note: The echo() function is not actually a function, so you don't have to use parentheses for it. However, if you want to pass more than one parameter to echo() , using brackets will generate a parse error.

Tip: The echo() function is slightly faster than print() .

Tip: The echo() function also has abbreviated syntax. Prior to PHP 5.4.0, this syntax only applies to short_open_tag configuration settings enabled.

Example

Example 1

Output text:

 <?php
echo "Hello world!" ;
?>

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Example 2

Write the value of the string variable ($str) to the output:

 <?php
$str = "Hello world!" ;
echo $str ;
?>

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Example 3

Write the value of the string variable ($str) to the output, including HTML tags:

 <?php
$str = "Hello world!" ;
echo $str ;
echo "<br>What a nice day!" ;
?>

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Example 4

Concatenate two string variables:

 <?php
$str1 = "Hello world!" ;
$str2 = "What a nice day!" ;
echo $str1 . " " . $str2 ;
?> 

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Example 5

Write array values ​​to output:

 <?php
$age = array ( "Peter" => "35" ) ;
echo "Peter is " . $age [ 'Peter' ] . " years old." ;
?>

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Example 6

Write text to output:

 <?php
echo "This text
spans multiple
lines." ;
?> 

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Example 7

How to use multiple parameters:

 <?php
echo 'This ' , 'string ' , 'was ' , 'made ' , 'with multiple parameters.' ;
?> 

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Example 8

The difference between single quotes and double quotes. Single quotes will output the variable name, not the value:

 <?php
$color = "red" ;
echo "Roses are $color " ;
echo "<br>" ;
echo 'Roses are $color' ;
?>

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Example 9

Simplified syntax (only applicable to short_open_tag configuration settings enabled):

 <?php
$color = "red" ;
?>

< p > Roses are <?= $color ?> </ p > 

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grammar

 echo ( strings )