How to read json encoded value using php? - php

Question

I have a variable in PHP, named as $partialSegments. I want to iterate through it and perform actions when I strike operator or rOperandValue, etc. I receive it in a function call, so while making the
function named(say):
public function convertJsCode($partialSegments){
//logic
}
I am struggling with the logic
"segments":{"type":"custom","partialSegments":[{"type":"7","operator":11,"rOperandValue":["windows xp"],"prevLogicalOperator":null},{"type":"8","operator":11,"rOperandValue":["other"],"prevLogicalOperator":"AND"}]}}

Answer 1

Use json_decode() function in php
<?php
$json = '{"segments":{"type":"custom","partialSegments":[{"type":"7","operator":11,"rOperandValue":["windows xp"],"prevLogicalOperator":null},{"type":"8","operator":11,"rOperandValue":["other"],"prevLogicalOperator":"AND"}]}}';
$parsed = json_decode($json, true);
foreach($parsed["segments"]["partialSegments"] as $val) {
$operator = $val["operator"]; // operator value
$rOperandValue = $val["rOperandValue"][0]; // rOperandValue value
}
?>

Answer 2

Step1: convert json encoded data into php array using json_decode(); function. This function receive two arguments: first one is: json_encoded data which should be decoded and 2nd one is: boolean(TRUE or FALSE). pass second argument as TRUE to convert the json concoded values as php array, if you pass false it will return php object.
Step2: iterate php array and set the logic like a charm.
<?php
$json = '{"segments":{"type":"custom","partialSegments":[{"type":"7","operator":11,"rOperandValue":["windows xp"],"prevLogicalOperator":null},{"type":"8","operator":11,"rOperandValue":["other"],"prevLogicalOperator":"AND"}]}}';
$parsed = json_decode($json, true);
foreach($parsed as $single){
$segments = $single['partialSegments'];
//print_r($single);
foreach($segments as $segment){
echo 'operator:'. $segment['operator'].'<br>';
print_r($segment['rOperandValue']);
// put your logic based on 'operator' or 'rOperandValue'
}
}
?>
Suggestion: Don't use hard code index to work with an array like: $segment['rOperandValue'][0]. array could be empty. i.e: if you want to do anything when a value is found in $segment['rOperandValue'] use in_array().