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PHP supports following four loop types. while − loops through a block of code if and as long as a specified condition is true. These include for loop, while and do while and the foreach loop. The do…while loop is slightly different in the sense that it executes the statements within its body for one or more times. This loop is used to loop through each index of an array. If you learning PHP and having the problem in understanding loops then this blog would be very beneficial to you. As you all know that Loops are very important for any programming Language. The compiler checks the condition and executes the code if the limit does not end. It gives the loop variable the initial value. PHP For Loop. // block of code to be executed In addition, the continue statement is used to skip all the subsequent instructions and take the control back to loop. If you just need to walk through all the elements of an object or array, use [code ]foreach[/code]. The number of times has to be specified in … In these, inside each iteration of first For loop, an entire second For loop runs. In simple terms, a control structure allows you to control the flow of code execution in your application. while — loops through a block of code as long as the condition specified evaluates to true. It is often useful to execute the same or similar block of code several times. Loops are the methods of PHP, which used to set the compiler work limit of the number. The for loop is the most complex loop that behaves like in the C language. The initialization expression is executed only once, when the control is passed to the loop for the first time. There is a common structure of all types of loops, such as: There is a control variable, called the loop counter. Answer: The foreach construct provides an easy way to iterate over arrays. In above syntax the value of current array element will be assigned to $value variable with every loop iteration. // block of code to be executed The body of the loop is executed only after the condition has been checked. Loops execute block of code while the loop condition is true. foreach loop. Instead of copy-pasting almost equal statements loops provide a mechanism for executing code a specific number of times and walking over data structures. $players[0] = array(50, 110, 130); $players[1] = array(50, 145, 170); $players[2] = array(50, 90, 205); $count1 = count($players); for ($i=0; $i<$count1; $i++) { $count2 = count($players[$i]); echo 'Player ' . The increment/decrement expression is always executed when the control returns to the beginning of the loop.                       +91 9811-81-81-22. That is, the number of iterations is known beforehand. Enter your email address here please. for – loops through a block of code a specified number of times. The do...while looping construct is similar to the while loop construct as both iterates until the specified condition becomes false. Save my name, email, and website in this browser for the next time I comment. Loop statements are important topics in PHP programming language. The repetition continues while the condition set for the loop remains true, once the condition becomes false, the loop ends and the control is passed to the statement following the loop. for loop – In for loop execute block of code up to the condition is true. The variable that has been checked in the Boolean expression is called the loop control variable. In for loop condition is predefined. Answer: The foreach loop works only on arrays and is used to loop through each key/value pair in an array.  −  In the code below, i is the iteration variable; In the while loop the value of i is displayed and incremented with every iteration. Web Development Institute is the premier institute in Delhi-NCR offering wide range of web design and web development courses. It should be used if the number of iterations is known otherwise use while loop. PHP For Loop. These Multiple Choice Questions (mcq) should be practiced to improve the PHP skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations. do while loop. In the above diagram if a condition is always true then control can never come outsite the loop body and we say those kind of loops as an infinite loop. Foreach loop is used to fetch each value of $arr in $value with each iteration and double that value. Sometimes loops are beneficial for developers to save the time and effort of writing similar code. PHP supports different types of loops to iterate through a given block of code. It runs with their every element. Question 8. With this, you can do more with less number of codes. The for loop PHP script runs a block of code multiple times repeatedly. There are basically two types of for loops; for; for… each. The for loop. > what's the criteria to select a loop? > which one is better for performance? Understanding loops in PHP. These types of implementations are called Nested For Loops. Consider the following code PHP > Various types of Loops in PHP. Last updated on March 20th, 2021 by Yogesh Singh. If the condition is true the statement is repeated as long as the specified condition is true. The for loop constructs provides a compact way of specifying the statements that control the repetition of steps within the loop. Consider the following code

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