loop

$a = 1;
while ($a <= 10) {
  echo $a;
  $a = $a + 1;
}
# 1,2,3,4,5,6,7,8,9

$a = 0;
do {
  echo $i;
  $a = $a + 1;
} while ($a < 1);
#  0

for ($a = 0 ; $a < 10 ; $a++) {
  echo "${a}";
}
#  0,1,2,3,4,5,6,7,8,9

for ($a = 0 ; $a < 10 ; $a++) {
  if ($a === 5) {
    break;
  }
  echo "${a}";
}
#  0,1,2,3,4

for ($a = 0 ; $a < 10 ; $a++) {
  if ($a === 5) {
    continue;
  }
  echo "${a}";
}
# 0,1,2,3,4,6,7,8,9

$users = ["kamal","jamal","sadia","maruf"];
foreach($users as $key => $user){
  echo "${key} = ${user}\n";
}
# 0 = kamal
# 1 = jamal
# 2 = sadia
# 3 = maruf