Display PHP Variable in HTML

0-PHP-VAR-HTML.MD

HOW TO DISPLAY PHP VARIABLES IN HTML

https://code-boxx.com/display-php-variables-in-html/

LICENSE

Copyright by Code Boxx

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

1-delimiter.php

<?php
// (A) THE VARIABLES
$first = "foo";
$second = "bar";
?>

<!-- (B) OUTPUT VARIABLES -->
<p><?php echo $first; ?></p>
<p><?php echo $second; ?></p>

2-short-tag.php

<?php
// (A) THE VARIABLES
$var = "foo";
$arr = ["Apple", "Beet", "Cherry"];
?>

<!-- (B) OUTPUT VARIABLE -->
<p><?=$var?></p>

<!-- (C) COMBINING THE USE OF DELIMITER AND SHORT TAG -->
<ul>
  <?php foreach ($arr as $fruit) { ?>
  <li><?=$fruit?></li>
  <?php } ?>
</ul>

3-echo.php

<?php
// (A) ECHO STRING OF HTML
$first = "foo";
$second = "bar";
echo "<p>$first $second</p>";

// (B) DUMMY ARRAY
$person = [
  "name" => "Jon Doe",
  "email" => "jon@doe.com"
];

// (C) THIS WILL NOT WORK!
// echo "<p>$person["name"] - $person["email"]</p>";

// (D) WRAP VARIABLES IN CURLY BRACES
echo "<p>{$person["name"]} - {$person["email"]}</p>";

4-printf.php

<?php
// (A) DUMMY ARRAY
$person = [
  "name" => "Jon Doe",
  "email" => "jon@doe.com"
];

// (B) FORMATTED PRINT
foreach ($person as $k=>$v) {
  printf("<div><strong>%s:</strong> %s</div>", $k, $v);
}

// (C) THE USEFUL PARTS...
$val = 123.45678;
printf("<p>ROUND OFF 2 DECIMAL PLACES %0.2f</p>", $val);

$val = 0.432;
printf("<p>PAD UP TO 5 ZEROS, 2 DECIMAL PLACES %08.2f</p>", $val);

$val = "123";
printf("<p>PAD WITH DOTS %'.10d</p>", $val);