PHP

PHP echo statement-

  • Output one or more strings.
  • echo is not actually a function (it is a language construct), so you are not required to use parentheses with it. echo (unlike some other language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want to pass more than one parameter to echo, the parameters must not be enclosed within parentheses.
  • Strings can either be passed individually as multiple arguments or concatenated together and passed as a single argument.
<?php
echo "Hello World";

echo "Escaping characters is done \"Like this\".";

// You can use variables inside of an echo statement
$foo = "foobar";
$bar = "barbaz";

echo "foo is $foo"; // foo is foobar

// You can also use arrays
$baz = array("value" => "foo");

echo "this is {$baz['value']} !"; // this is foo !

// Using single quotes will print the variable name, not the value
echo 'foo is $foo'; // foo is $foo

// If you are not using any other characters, you can just echo variables
echo $foo; // foobar
echo $foo,$bar; // foobarbarbaz

// Strings can either be passed individually as multiple arguments or
// concatenated together and passed as a single argument
echo 'This ', 'string ', 'was ', 'made ', 'with multiple parameters.', chr(10);
echo 'This ' . 'string ' . 'was ' . 'made ' . 'with concatenation.' . "\n";

echo <<<END
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon. no extra whitespace!
END;

// Because echo does not behave like a function, the following code is invalid.
($some_var) ? echo 'true' : echo 'false';


?>


Note:- echo also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign.

foo is <?=$foo?>

PHP print statement—

  • Output a string.
  • Print is not actually a real function (it is a language construct) so you are not required to use parentheses with its argument list.
<?php
print("Hello World");

print "print() also works without parentheses.";

print "This spans
multiple lines. The newlines will be
output as well";

print "This spans\nmultiple lines. The newlines will be\noutput as well.";

print "escaping characters is done \"Like this\".";

// You can use variables inside a print statement
$foo = "foobar";
$bar = "barbaz";

print "foo is $foo"; // foo is foobar

// You can also use arrays
$bar = array("value" => "foo");

print "this is {$bar['value']} !"; // this is foo !

// Using single quotes will print the variable name, not the value
print 'foo is $foo'; // foo is $foo

// If you are not using any other characters, you can just print variables
print $foo; // foobar

print <<<END
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon no extra whitespace!
END;
?>

Difference in echo and print statements-

The major differences to echo are that print only accepts a single argument and always returns 1.

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