shuffle(): Randomize the order of the elements fo array

shuffle($input_array);

Example

$my_array=array(0,1,2,3,4,5,6);
shuffle($my_array);
foreach ($my_array as $element) {
    echo $element . "  ";
}

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Example

$my_array=array('One','Two','Three','Four','Five');
shuffle($my_array);
echo "<br><br>";
while (list ($key, $val) = each ($my_array)) {
echo "$key -> $val <br>";
}

0 -> Two 
1 -> Five 
2 -> Three 
3 -> Four 
4 -> One 

Example with Literal Keys

$my_array=array('Fruits1' =>'Banana','Fruits2'=>'Mango','Fruits3'=>'Apple','Fruits4'=>'Grapes');
shuffle($my_array);
while (list ($key, $val) = each ($my_array)) {
echo "$key -> $val <br>";
}

0 -> Mango 
1 -> Apple 
2 -> Banana 
3 -> Grapes 

Example with Multidimensional Aarray

$my_array=array(array("path"=>"php_tutorial","section"=>"php"),
array("path"=>"sql_tutorial","section"=>"sql"),
array("path"=>"javascript_tutorial","section"=>"js"),
array("path"=>"html_tutorial","section"=>"html"),
);
shuffle($my_array);
$max=sizeof($my_array);
for($i=0; $i<$max; $i++) { 

while (list ($key, $val) = each ($my_array[$i])) { 
echo "$key -> $val <br>"; 
} // inner array while loop

} // outer array for loop

path -> javascript_tutorial 
section -> js 
path -> sql_tutorial 
section -> sql 
path -> php_tutorial 
section -> php 
path -> html_tutorial 
section -> html

Using range with shuffle

$my_array=range(0,10);
shuffle($my_array);
foreach ($my_array as $element) {
    echo $element . "  ";
}

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Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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