How to extract a value between square brackets in php

Question

I am writing some code that expects to receive a block of html which is always going to include the following:

var code = [39.474, -0.3548];

The value between the square brackets is always going to be different. How could I extract the value between the square brackets using php?

I should probably point out that I am parsing a block of HTML to php that includes js aswell.

[Check this link](http://stackoverflow.com/questions/10057671/how-foreach-actually-works) — Thiago Augustus Oliveira, Aug 26 '15 at 14:35

score 1 · Accepted Answer · answered Aug 26 '15 at 14:33

1

Use a regular expression like

preg_match_all('/\\[(.*?)\\]/', $your_string, $matches, PREG_SET_ORDER);

The array $matches[1] then will contain your values.

answered Aug 26 '15 at 14:33

syck

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i got one more post which gives u multiple bracket values if u have https://stackoverflow.com/a/10104517/4758038 – vinit agrawal Jan 18 '22 at 14:42

Ivan De Paz Centeno · Answer 2 · 2015-08-26T15:15:32.420

0

If the Javascript array format will be kept constant (always two components and a space after ','), you can use /(?:\[)(.*)[,][ ](.*)(?:\])/ regex to extract them in php:

$line = 'var code = [39.474, -0.3548];';

preg_match("/(?:\[)(.*)[,][ ](.*)(?:\])/", $line, $output_array);

print_r ($output_array);

The result will be

array(
0   =>  [39.474, -0.3548]
1   =>  39.474
2   =>  -0.3548
)

edited Aug 26 '15 at 15:15

answered Aug 26 '15 at 15:01

Ivan De Paz Centeno

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score -1 · Answer 3 · answered Aug 26 '15 at 14:30

-1

A quick and dirty solution may be:

Replace "[" and "]"
explode by ","

$a = "[39.474, -0.3548]"; $b = str_replace("]", "", str_replace("[", "", $a)); $c = explode(",", $b); print_r($c);

Output:

Array ( [0] => 39.474 [1] => -0.3548 )

answered Aug 26 '15 at 14:30

B001ᛦ

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How to extract a value between square brackets in php

3 Answers3