Loops in PHP are used to execute the same block of code a specified number of times. PHP supports following four loop types.
for − loops through a block of code a specified number of times.
while − loops through a block of code if and as long as a specified condition is true.
do...while − loops through a block of code once, and then repeats the loop as long as a special condition is true.
foreach − loops through a block of code for each element in an array.