PHP JSON String escape Double Quotes for JS output

Question

I m creating a JSON string from a PHP array  I ve encoded it using json encode      data   array       title    gt   Example string  s with  special  characters       data   json encode   data       data is localized using wp localize script   and is accessible via a global data variable   In the JS file I can access the information by the following   var data       data replace    amp quot  g             jsonData   jQuery parseJSON  data     console log  jsonData      This results in an output of      title   Example string s with  special  characters      Entering that result into http   jsonlint com  returns an error  Removing the double quotes around  special  validates the string   What is the best way to create a JSON string from PHP and properly escape it for use in a JS file

User · Answer

I succefully just did this      json   str replace   u0022           json encode   phpArray JSON HEX QUOT       json encode   by default will escape   to      But it s still wrong JSON for json PARSE     So by adding option JSON HEX QUOT  json encode   will replace   with  u0022   json PARSE   still will not like  u0022   So  then we need to replace  u0022 with       The        is escaped       NOTE   you can add option JSON HEX APOS to replace single quote with unicode HEX value if you have javascript single quote issue   ex  json encode   phpArray  JSON HEX APOS JSON HEX QUOT

User · Answer

I just ran into this problem and the actual issue was that I forgot to add a proper application json header before spitting out the actual JSON data   header  Content-Type  application json

User · Answer

I had challenge with users innocently entering     and some using double quotes to define their content   I tweaked a couple of answers from this page and others to finally define my small little work-around   products   array  ofDirtyArray   if  products   null        header  Content-type  application json        header  Content-Type  charset utf-8        array walk recursive  products  function  amp  val             val   html entity decode htmlentities  val  ENT QUOTES   UTF-8                 echo json encode  products   JSON UNESCAPED UNICODE   JSON UNESCAPED SLASHES   JSON NUMERIC CHECK       I hope it helps someone someone improves it

User · Answer

Error come on script not in HTML tags   lt script src  quot https   code jquery com jquery-3 5 1 min js quot  gt  lt  script gt   lt pre gt  lt  php print r   POST        gt  lt  pre gt    lt form method  quot POST quot  gt       lt input type  quot text quot  name  quot name quot  gt  lt br gt       lt input type  quot email quot  name  quot email quot  gt  lt br gt       lt input type  quot time quot  name  quot time quot  gt  lt br gt       lt input type  quot date quot  name  quot date quot  gt  lt br gt       lt input type  quot hidden quot  name  quot id quot  gt  lt br gt       lt textarea name  quot detail quot  gt  lt  textarea gt       lt input type  quot submit quot  value  quot Submit quot  gt  lt br gt   lt  form gt   lt  php     data     data                  name   gt  loKESH quot    quot       quot                email   gt  imvsrajput demo demo                time   gt date  H i 00                 date   gt date  Y-m-d                 detail   gt  Try this var dump 0   quot ZERO quot         quot    quot             quot                id   gt 123               gt   lt span style  quot display  none  quot  class  quot ajax-data quot  gt  lt   json encode   POST   data   gt  lt  span gt   lt script type  quot text javascript quot  gt         Error           var json   JSON parse   lt   json encode  data   gt            Error solved        var json   JSON parse     ajax-data   html         console log json         automatically assigned value by name attr        for x in json               name  quot   x   quot     val json x           lt  script gt

User · Answer

Use json encode  json array  JSON HEX QUOT   since php 5 3  http   php net manual en json constants php

User · Answer

This is a solutions that takes care of single and double quotes    lt  php  php data   array  title   gt  Example string s with   special   characters      escaped data   json encode   php data  JSON HEX QUOT JSON HEX APOS     escaped data   str replace   u0022            escaped data     escaped data   str replace   u0027            escaped data      gt   lt script gt     no need to use JSON parse      var js data    lt     escaped data   gt   alert js data title      should alert  Example string s with  special  characters   lt  script gt

User · Answer

Another way would be to encode the quotes using htmlspecialchars    json array   array       title    gt   Example string  s with  special  characters       json decode   htmlspecialchars json encode  json array   ENT QUOTES   UTF-8

[php] PHP JSON String, escape Double Quotes for JS output

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