Generating numbers and randomly displaying them
I want generate a list of numbers from 0000 to 9999. I would then like to take all the results 开发者_开发技巧and echo them out randomly. (not in order) How would I do this?
Thank you in advance!
$numbers = range(0,9999);
shuffle($numbers);
foreach($numbers as $number) {
echo str_pad($number,4,'0',STR_PAD_LEFT),'<br />';
}
To generate a list of 0000 to 9999, you can do something like this:
<?php
$array_list = array();
$end =9999;
for($idx=0; $idx<=$end; $idx++)
{
$array_list[$idx] = str_pad($idx, 4, 0, STR_PAD_LEFT);
}
?>
To generate that list randomly, you can use array_rand():
<?php
for($idx=0; $idx<=9; $idx++)
{
echo array_rand( $array_list );
}
?>
Edit:
Here..
$randarr = array();
for ($i = 0; $i < 9999; $i++) {
array_push($randarr, $i);
}
shuffle($randarr);
foreach($randarr as $randval) {
echo $randval . "\n";
}
PHP does have some basic functions to generate this range:
$aRange = range(0, 9999);
shuffle($aRange);
print_r($aRange);
print the 4 digits output:
foreach($aRange as $number) {
print str_pad($number, 4, 0, STR_PAD_LEFT);
}
Check out PHP's rand() function.
You could do something like:
for ( $counter=0; $counter < 10000; $counter += 1) {
$rand=rand(0,9999); echo $rand."<br />";
}
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