PHP loop for JSON rows - php

Question

I have example array of my data and I have to insert it into Google Charts with json. But I'd like to know how could make each Json data row with loop, so if I don't have that specific value defined I won't get an error.
$dataArray=array('item1;item2;item3;item4;item5','item2;item4;item3','item2;item3','item5;item4','item1;item4;item2');
$arrayOUT = [];
foreach ($dataArray as $a) {
$t = explode(";", $a);
foreach ($t as $y) {
if (!isset($arrayOUT[$y])) {
$arrayOUT[$y] = 0;
}
$arrayOUT[$y] += 1;
}
}
At the moment I have static json rows:
echo '{
"cols": [
{"id":"","label":"Data","pattern":"","type":"string"},
{"id":"","label":"Count","pattern":"","type":"number"}
],
"rows": [
{"c":[{"v":"item1","f":null},{"v":'.$arrayOUT['item1'].',"f":null}]},
{"c":[{"v":"item2","f":null},{"v":'.$arrayOUT['item2'].',"f":null}]},
{"c":[{"v":"item3","f":null},{"v":'.$arrayOUT['item3'].',"f":null}]},
{"c":[{"v":"item4","f":null},{"v":'.$arrayOUT['item4'].',"f":null}]},
{"c":[{"v":"item5","f":null},{"v":'.$arrayOUT['item5'].',"f":null}]}
]
}';
But I would like to have rows done with loop. So for example, if I dont have item4 in my array, it wont create this row. So it only creates rows with existing data.
echo '{
"cols": [
{"id":"","label":"Data","pattern":"","type":"string"},
{"id":"","label":"Count","pattern":"","type":"number"}
],
"rows": [
Loop this row to create dynamic rows
{"c":[{"v":"item","f":null},{"v":'.$arrayOUT['item'].',"f":null}]},
]
}';

Answer 1

You can create a loop over the arrayOUT object.
I edited your example:
$dataArray=array('item1;item2;item3;item4;item5','item2;item4;item3','item2;item3','item5;item4','item1;item4;item2');
$arrayOUT = [];
foreach ($dataArray as $a) {
$t = explode(";", $a);
foreach ($t as $y) {
if (!isset($arrayOUT[$y])) {
$arrayOUT[$y] = 0;
} else {
$arrayOUT[$y] += 1;
}
}
}
$rows = "";
forEach($arrayOUT as $item=>$count){
$rows = $rows."{'c':[{'v':'{$item}','f':null},{'v':'{$count}','f':null}]},";
}
echo '{
"cols": [
{"id":"","label":"Data","pattern":"","type":"string"},
{"id":"","label":"Count","pattern":"","type":"number"}
],
"rows": [
'.$rows.'
]
}';