How to read json encoded value using 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"}]}}

json_decode should help you to transform it to arrays/objects. — jh1711
– jh1711, Commented Jan 11, 2018 at 5:33
@TarangP sorry, I have edited the question. Please have a look. — Aviral Srivastava
– Aviral Srivastava, Commented Jan 11, 2018 at 5:35
@jh1711 Okay I will have a look However, is there a chance that this data can be stored in a PHP variable? If yes, how would I iterate through it? — Aviral Srivastava
– Aviral Srivastava, Commented Jan 11, 2018 at 5:36
title should be: How to read json encoded value using php? and you should add json tag. Your title does not make sense. — Abdus Sattar Bhuiyan
– Abdus Sattar Bhuiyan, Commented Jan 11, 2018 at 6:29

Aman Kumar · Accepted Answer · 2018-01-11 06:04:50Z

2

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 

}

?>

edited Jan 11, 2018 at 6:04

answered Jan 11, 2018 at 5:37

Aman Kumar

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2 Comments

Aviral Srivastava Over a year ago

And how can I iterate through it? I have used the function json_decode($partialSegments, true) Now when I print the decoded value, this is the answer: I am getting the same json printed while print_r(), my doubt is how can i iterate through it?

Aviral Srivastava Over a year ago

[stackoverflow.com/users/6023296/aman-kumar](Aman Kumar) I got what you are saying. Sorry for not getting it at first and thanks for your time.

Aman Kumar · Accepted Answer · 2018-01-17 08:10:01Z

0

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().

edited Jan 17, 2018 at 8:10

Aman Kumar

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answered Jan 11, 2018 at 6:10

Abdus Sattar Bhuiyan

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1 Comment

Aviral Srivastava Over a year ago

Yeah, I avoided using the hard coded value. Thank you!

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