PHP/Statement/do while
Содержание
Break in Nested Loops
<source lang="html4strict">
<html> <head> <title>Break Nested</title> </head> <body> <?php
srand((double)microtime() * 1000000);
$number = rand(1, 1000);
$j = 0;
$outer_loop_itr = 50;
for($i = 1; $i <= $outer_loop_itr; $i++) {
$j = 0;
do {
$j++;
$number = rand(1, 1000);
if($number == 999) {
break;
}
} while(1);
$num_iterations[$i] = $j;
}
$avg_iterations = (array_sum($num_iterations) / $outer_loop_itr);
print("an average of " . $avg_iterations);
?> </body> </html>
</source>
Counting to 10 with do ... while
<source lang="html4strict">
<?php $num = 1; do {
echo "Number is ".$num."
"; $num++;
} while ($num <= 10); echo "Done."; ?>
</source>
Do while loop
<source lang="html4strict">
<?php
$a = 1;
do{
echo $a . "
";
$a++;
}while ($a > 10);
?>
</source>
do...while loop is executed at least once
<source lang="html4strict">
<?php
$i = 11;
do {
print "Number $i\n";
} while ($i < 10);
?>
Same code could be written using a while loop:
<?php
$i = 11;
while ($i < 10) {
print "Number $i\n";
}
?>
</source>
do while loop with counter
<source lang="html4strict">
<?php $num = 11; do {
echo $num; $num++;
} while ($num <= 10); ?>
</source>
do while with integer counter
<source lang="html4strict">
<?php
$count = 11;
do {
echo "$count squared = ".pow($count,2). "
";
} while ($count < 10);
?>
</source>
