Optimizing your PHP code: Single-Quote vs Double-Quote

[salbahis]

---

Single-Quote is faster than Double-Quote...

Why?

because double-quote parse the string before displaying, while single-quote displays the text immediately...

Case-Scenario:

<?php
$test = '3owz ph0wz';

echo "Test: $test";
// Displays:
// Test: 3owz ph0wz

echo 'Test: $test';
// Displays:
// Test: $test

?>

hope this simple optimization helps... ill try to create another tips for optimizing your code...

[dodie]

Single-Quote is faster than Double-Quote...

Why?

because double-quote parse the string before displaying, while single-quote displays the text immediately...

Case-Scenario:

<?php
$test = '3owz ph0wz';

echo "Test: $test";
// Displays:
// Test: 3owz ph0wz

echo 'Test: $test';
// Displays:
// Test: $test

?>

The using of quotes is fairly understandable already. If using DOUBLE QUOTES, php interprets incoming input like Variable will be parsed. SINGLE QUOTES is just strictly string. Concatenation is the common grounds of these syntaxes.

We use both, depends on the ease of use. like this one

echo '<input type="text" value="'.$var1.'">';   
// including the attribute fields of html, easier to use.

echo "Hello $var_username";                         
// mixing the variable,  easier to use.

[salbahis]

The using of quotes is fairly understandable already. If using DOUBLE QUOTES, php interprets incoming input like Variable will be parsed. SINGLE QUOTES is just strictly string. Concatenation is the common grounds of these syntaxes.

We use both, depends on the ease of use. like this one

echo '<input type="text" value="'.$var1.'">';   
// including the attribute fields of html, easier to use.

echo "Hello $var_username";                         
// mixing the variable,  easier to use.

yes its case-2-case scenario but it can be remedied if you break it by using "\"

<?php
$sql = 'SELECT * FROM db_table WHERE ID=\''.$id.'\' LIMIT 0,3';

$sql = "SELECT * FROM db_table WHERE ID='".$id."' LIMIT 0,3";

?>

then again it still depends on the coder which to choose and what situtation dictates...

for me most of the times i limit my self using single-quote due to the structure of the site, that it loads very slow...

[sanggano_boy]

if you're using more than one programming language it's best to use standard concatenation technique
using this it's easy to debug run-time errors relating to concatenation.
you will separate the value from the string.

basic examples:

//php
e.g. echo "Display the string with value = ".$valuehere;

//java
System.out.println("Display the string with value = "+valuehere);

//VB
Debug.print "Display the string with value = " & valuehere


or in any case you can apply what TS wrote

[ingkiang]

up ko ani pra mapun-an pa..