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edward wong
3,349 PointsHelp with understanding this video
Three questions I have:
1) Inside the list's parameter, how come the $key and $val variables didn't have to be declared first before using them?
2) When echoing out the $key and $val variables, why are they both within double quotes? I thought it would've been written as echo $key . " => " . $val?
3) Is the whole point of looping through an array is to be able to echo out individual items contained in the array?
2 Answers
jamesjones21
9,260 Pointsthe foreach loop is great for working with arrays:
//The $key and $value variables can be named anything, for which ever suits your requirement, but as for beginners to understand they use $key to assign the array key to that variable and $value to assign the value to it.
// The variables are set within the foreach loop, so its within the scope of the loop, if used outside of the loop tags then they will be undefined variables.
//$key = the array keys
//$value = the value stored within the key
foreach($array as $key => $value){
//code to execute
}
Hopefully this sums up everything and if you need me to provide more information, please do let me know. Kind regards, James
yahya alhalki
1,149 Pointshey but every time i try to change the $key or $value it gives me an error
jamesjones21
9,260 Pointscan you show me your code? I can then see where you are going wrong.