Skip to main content

Difference between Echo and Print in php

Difference Between $ and $$
 print and echo are commands used to output information to the visitors screen (on the web page). Both do the same job, so it usually comes down to a matter of personal preference on which one you like to use. 

<?php
print "Hello World! <br />";
echo "Hello World!";
?>

The output :
Hello World!
Hello World!

The above example shows both outputs are the same. It also shows that regular HTML tags may be placed within the value areas as well as regular text. 

There is a slight difference between print and echo which would depend on how you want to use the outcome. Using the print method can return a true/false value. This may be helpful during a script execution of somesort. Echo does not return a value, but has been considered as a faster executed command. All this can get into a rather complicated discussion, so for now, you can just use whichever one you prefer. 

Some resources will state that the quoted areas should be within rounded brackets. This is a valid way of coding, but not required. 

<?php
print ("Hello World!");
?>

If you need to use quotes within your value area and have them show up on the web page, you will have to "escape" them. This is so the coding does not get confused on which quotes are the real ones and which ones are for display.
<?php
print "Hello from \"another\" World!";
?>

Will result as :
Hello from "another" World! 

Comments

Popular posts from this blog

Number Format In Javascript

Number.toFixed() :                                 Formats any number for "x" number of trailing decimals. The number is rounded up, and "0"s are used after the decimal point if needed to create the desired decimal length.   var profits=2489.8237 profits.toFixed(3) //returns 2489.824 (round up) profits.toFixed(2) //returns 2489.82 profits.toFixed(7) //returns 2489.8237000 (padding)   Number.toPrecision() :                                   Formats any number so it is of "x" length. Also called significant digits. A decimal point and "0"s are used if needed to create the desired length.   var anumber=123.45 anumber.toPreci...

Use of indexOf and charAt in javascript

indexOf(): The indexOf() method returns the position of the first occurrence of a specified value in a string. This method returns -1 if the value to search for never occurs. example :  <script type="text/javascript"> var str="Hello world!"; document.write(str.indexOf("d") + "<br />"); document.write(str.indexOf("WORLD") + "<br />"); document.write(str.indexOf("world")); </script> Output : 10 -1 6 charAt() The charAt() method returns the character at the specified index in a string. The index of the first character is 0, and the index of the last character in a string called "txt", is txt.length-1 <script type="text/javascript"> var str = "Hello world!"; document.write("First character: " + str.charAt(0) + "<br />"); document.write("Last character: " + str.charAt(str.l...

Find extension of file in Php

In our scripting sometimes we need to upload such documents , at that time there should be a validation for proper file. For example in your system suppose there is a field for image upload , that is obvious in that field only image formats are allowed (jpg,jpeg,png,gif etc.). At that time you have to give a validation on that field. In Php to find the extension and validation here is your code :  <?php                     $image = $_FILES["file"]["name"];    // to fetch the file name             $n1=strripos($image,".");                     // to find the last position of "."             $v1 =substr($image,$n1);                  ...