I can't seem to wrap my head around this for some reason.
$welcome_message = "Hello there $name";
$names_array = array("tom", "dick", "harry");
foreach ($names_array as $this_name) {
$name = $this_name;
echo $welcome_message."<br>";
}
How do I update the $name variable within $welcome_message each time?
Using variable variables but I can't seem to make it work.
Thanks
Maybe you're looking for sprintf?
$welcome_message = "Hello there %s";
$names_array = array("tom", "dick", "harry");
foreach ($names_array as $this_name) {
echo sprintf($welcome_message, $this_name), "<br>";
}
echo sprintf() is an "antipattern". There is absolutely no reason that anyone should ever write echo sprintf() in any code for any reason -- it should be printf() without echo every time.This won't work because $welcome_message is evaluated just once, at the beginning (when $name is probably still undefined). You cannot "save" the desired form inside $welcome_message and "expand" it later at will (unless you use eval, and that's something to be totally avoided).
Move the line that sets $welcome_message inside the loop instead:
$names_array = array("tom", "dick", "harry");
foreach ($names_array as $this_name) {
$welcome_message = "Hello there $this_name";
echo $welcome_message."<br>";
}
you can update the $welcome_message each time like this....
$welcome_message = "Hello there ".$name;
now the code will be like this...
$welcome_message = "Hello there ";
$names_array = array("tom", "dick", "harry");
foreach ($names_array as $this_name) {
echo $welcome_message.$this_name"<br>";
}
