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PHP Looping - For Loops « Previous
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Loops execute a block of code a specified number of times, or while a specified condition is true.
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The for Loop
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The for loop is used when you know in advance how many times the script should run.
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for (init; condition; increment) { code to be executed; } Parameters:
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init: Mostly used to set a counter (but can be any code to be executed once at the beginning of the loop) condition: Evaluated for each loop iteration. If it evaluates to TRUE, the loop continues. If it evaluates to FALSE, the loop ends. increment: Mostly used to increment a counter (but can be any code to be executed at the end of the iteration) Note: The init and increment parameters above can be empty or have multiple expressions (separated by commas).
Example The example below defines a loop that starts with i=1. The loop will continue to run as long as the variable i is less than, or equal to 5. The variable i will increase by 1 each time the loop runs:
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Output:
The The The The The
number number number number number
is is is is is
1 2 3 4 5
The foreach Loop The foreach loop is used to loop through arrays.
Syntax foreach ($array as $value) { code to be executed;
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09/11/12 17:27
} For every loop iteration, the value of the current array element is assigned to $value (and the array pointer is moved by one) - so on the next loop iteration, you'll be looking at the next array value.
Example The following example demonstrates a loop that will print the values of the given array:
Output:
one two three
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