I have arrays stored in files which have been serialized in php so that I don't have to explode/implode every time I use the data.
Is there a way by which i can unserialize and add a dimension to it in JS ?
the php equivalent would look like
$key = $_POST['num'];
$array = unserialize(file_get_contents("file.data");
$array[$key][0] = "marked";
file_put_contents(serialize($array);
the array $key[0] does not yet exist but i don't know if it will affect the rest of the the code
For javascript you probably don't want to use serialize and unserialize, but instead turn the result into JSON with json_encode.
This format can be easily decoded by Javascript using JSON.parse().
Unserilized your data using PHP unserialize function. And put convert it Json by using PHP Json_encode Encode function.
<script>
var data = JSON.parse('<?php echo json_encode(unserialize(file_get_content('filename.txt'))); ?>');
</script>
There is a library in php.js which does this. https://github.com/hirak/phpjs/blob/master/functions/var/unserialize.js
You can directly copy and use this function.
function unserialize(data) {
// discuss at: http://phpjs.org/functions/unserialize/
// original by: Arpad Ray (mailto:arpad@php.net)
// improved by: Pedro Tainha (http://www.pedrotainha.com)
// improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// improved by: Chris
// improved by: James
// improved by: Le Torbi
// improved by: Eli Skeggs
// bugfixed by: dptr1988
// bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// bugfixed by: Brett Zamir (http://brett-zamir.me)
// revised by: d3x
// input by: Brett Zamir (http://brett-zamir.me)
// input by: Martin (http://www.erlenwiese.de/)
// input by: kilops
// input by: Jaroslaw Czarniak
// note: We feel the main purpose of this function should be to ease the transport of data between php & js
// note: Aiming for PHP-compatibility, we have to translate objects to arrays
// example 1: unserialize('a:3:{i:0;s:5:"Kevin";i:1;s:3:"van";i:2;s:9:"Zonneveld";}');
// returns 1: ['Kevin', 'van', 'Zonneveld']
// example 2: unserialize('a:3:{s:9:"firstName";s:5:"Kevin";s:7:"midName";s:3:"van";s:7:"surName";s:9:"Zonneveld";}');
// returns 2: {firstName: 'Kevin', midName: 'van', surName: 'Zonneveld'}
var that = this,
utf8Overhead = function(chr) {
// http://phpjs.org/functions/unserialize:571#comment_95906
var code = chr.charCodeAt(0);
if (code < 0x0080) {
return 0;
}
if (code < 0x0800) {
return 1;
}
return 2;
};
error = function(type, msg, filename, line) {
throw new that.window[type](msg, filename, line);
};
read_until = function(data, offset, stopchr) {
var i = 2,
buf = [],
chr = data.slice(offset, offset + 1);
while (chr != stopchr) {
if ((i + offset) > data.length) {
error('Error', 'Invalid');
}
buf.push(chr);
chr = data.slice(offset + (i - 1), offset + i);
i += 1;
}
return [buf.length, buf.join('')];
};
read_chrs = function(data, offset, length) {
var i, chr, buf;
buf = [];
for (i = 0; i < length; i++) {
chr = data.slice(offset + (i - 1), offset + i);
buf.push(chr);
length -= utf8Overhead(chr);
}
return [buf.length, buf.join('')];
};
_unserialize = function(data, offset) {
var dtype, dataoffset, keyandchrs, keys, contig,
length, array, readdata, readData, ccount,
stringlength, i, key, kprops, kchrs, vprops,
vchrs, value, chrs = 0,
typeconvert = function(x) {
return x;
};
if (!offset) {
offset = 0;
}
dtype = (data.slice(offset, offset + 1))
.toLowerCase();
dataoffset = offset + 2;
switch (dtype) {
case 'i':
typeconvert = function(x) {
return parseInt(x, 10);
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'b':
typeconvert = function(x) {
return parseInt(x, 10) !== 0;
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'd':
typeconvert = function(x) {
return parseFloat(x);
};
readData = read_until(data, dataoffset, ';');
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 1;
break;
case 'n':
readdata = null;
break;
case 's':
ccount = read_until(data, dataoffset, ':');
chrs = ccount[0];
stringlength = ccount[1];
dataoffset += chrs + 2;
readData = read_chrs(data, dataoffset + 1, parseInt(stringlength, 10));
chrs = readData[0];
readdata = readData[1];
dataoffset += chrs + 2;
if (chrs != parseInt(stringlength, 10) && chrs != readdata.length) {
error('SyntaxError', 'String length mismatch');
}
break;
case 'a':
readdata = {};
keyandchrs = read_until(data, dataoffset, ':');
chrs = keyandchrs[0];
keys = keyandchrs[1];
dataoffset += chrs + 2;
length = parseInt(keys, 10);
contig = true;
for (i = 0; i < length; i++) {
kprops = _unserialize(data, dataoffset);
kchrs = kprops[1];
key = kprops[2];
dataoffset += kchrs;
vprops = _unserialize(data, dataoffset);
vchrs = vprops[1];
value = vprops[2];
dataoffset += vchrs;
if (key !== i)
contig = false;
readdata[key] = value;
}
if (contig) {
array = new Array(length);
for (i = 0; i < length; i++)
array[i] = readdata[i];
readdata = array;
}
dataoffset += 1;
break;
default:
error('SyntaxError', 'Unknown / Unhandled data type(s): ' + dtype);
break;
}
return [dtype, dataoffset - offset, typeconvert(readdata)];
};
return _unserialize((data + ''), 0)[2];
}
