I have a PHP array and I want to split it into a custom sentence.
$array = array('apple','blue','red','green');
I want the output below:
apple
apple blue
apple blue red
apple blue red green
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1That’s rather the opposite of splitting, you want to combine the array elements, to form some new output. What have you tried? Should be simple, using two nested for loops …C3roe– C3roe2021-05-25 08:03:08 +00:00Commented May 25, 2021 at 8:03
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1you could use a basic concatenation cycling your array elementsberend– berend2021-05-25 08:18:41 +00:00Commented May 25, 2021 at 8:18
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4 Answers
You could try this simple solution
$array = array('apple','blue','red','green');
$sentence = "";
foreach($array as $key) {
if($sentence === ""){
$sentence = $key;
}
else{
$sentence = $sentence." ".$key;
}
echo $sentence;
echo "</br>";
}
5 Comments
dspillai
Foreach is more efficient than for loop. Upvoting.
El_Vanja
if($sentence == null)? When will $sentence ever be null? Wouldn't it make more sense to use strict comparison to what you manually assigned, === ''?
Nikos Gkogkopoulos
@El_Vanja yes and no. we are comparing is strings, and an empty string can be evaluated as "null". your suggestion is more strict, mine is a bit more loose. you can also look at stackoverflow.com/questions/624922/…
El_Vanja
Code is clearer when it's explicit. There is no need for a loose comparison since you know exactly what you should be comparing to.
Nikos Gkogkopoulos
Edited the code, made it more explicit using your suggestion @El_Vanja
Pretty simple lightweight solution
$array = array('apple','blue','red','green');
$str = '';
foreach($array as $item) {
$str = $str . ' ' . $item;
echo(ltrim($str) . '<br>');
}
Use for-loop with array_slice to Extract a slice of the array each time, And use implode(glue, pieces) to join the values of the array with a space.
$array = array('apple','blue','red','green');
for ($i=1; $i <= count($array) ; $i++) {
echo implode(' ', array_slice($array, 0, $i))."</br>";
}
Prints:
apple
apple blue
apple blue red
apple blue red green
Comments
This is very simple
$array = array('apple','blue','red','green');
$new = "";
for($i=0; $i<sizeof($array); $i++) {
for($j=0; $j<=$i; $j++){
$new .= $array[$j]." ";
}
$new .= "<br>";
}
echo $new;
1 Comment
berend
it's not very efficient to use
sizeof() in your for loop. Also, one foreach() loop should suffice.