The break statement in PHP is used to terminate the program out of the loop containing it. If the break statement is used in a nested loop (loop inside loop), it will terminate innermost loop.
<?php
$i = 6;
$j = 0;
while ($j < $i){
$j++;
if($j == 4){
echo "Getting out of the loop.\n";
break;
}
echo $j."\n";
}
?>
1 2 3 Getting out of the loop.
<?php
for ($i = 1; $i <= 6; $i++){
if($i == 4 ){
echo "Getting out of the loop.\n";
break;
}
echo $i."\n";
}
?>
1 2 3 Getting out of the loop.
The Break statement terminates the inner loop whenever condition is fulfilled. In below mentioned example, program terminates the inner loop only when j = 100 (resulting the program to skip the inner loop for j = 100 and 1000).
//Nested loop without break statement
<?php
for ($i = 1; $i <= 3; $i++){
for ($j = 10; $j <= 1000; $j = $j * 10){
echo $i*$j."\n";
}
}
?>
//Nested loop with break statement
<?php
for ($i = 1; $i <= 3; $i++){
for ($j = 10; $j <= 1000; $j = $j * 10){
if($j == 100 ){
break;
}
echo $i*$j."\n";
}
}
?>
# output of nested loop without break statement 10 100 1000 20 200 2000 30 300 3000 # output of nested loop with break statement 10 20 30
