PHP echo command

As we saw in previews examples echo command is used for displaying the strings .you will use echo command many times in your web application .

Example of using echo command

Code:

<?
   echo "<b>My name is tom</b>";
?>

or using a variable

Code:

<?
   $mystring="My name is tom";
   echo "<b> $mystring </b>";
?>

the output of both codes is :
My name is tom


Dealing with Quotes!

Guidelines :
* Don't use quotes inside your string
* Escape your quotes that are within the string with a backslash. To escape a quote just place a backslash directly before the quotation mark, i.e. \"
* Use single quotes (apostrophes) for quotes inside your string.

Here codes example :

Code:

<?php
// This won't work because of the quotes around myh5!
echo "<h5 class="myh5">I am 22 years old !</h5>"; 

// Now  work because we escaped the quotes!
echo "<h5 class=\"myh5\">I am 22 years old !</h5>"; 

// work , because we used an apostrophe '
echo "<h5 class='myh5'>I am 22 years old</h5>"; 
?>

Join variables and strings

you can join variables and text string using dot (.) .By this way you will save large number of echo command statements .

example

Code:

<?php
  $mystring ="<br/>Hi . my name is : ";
  echo $mystring." tom";
  echo $mystring." john";
?>

The output of this code is :

Code:

Hi . my name is :  tom
Hi . my name is :  john