获取最后一个URL

Question

I have a data in following JSON sort of format in which I am trying to only get the very last URL which in my following example is https://lastexample.com/images/I/4162nAIaRCL.jpg . Is there an easy way I can retrieve this via PHP?

{"https://example.com/images/I/4162nAIaRCL._SX425_.jpg":[425,425],
"https://example.com/images/I/4162nAIaRCL._SY355_.jpg":[355,355],
"https://example.com/images/I/4162nAIaRCL._SX466_.jpg":[466,466],
"https://example.com/images/I/4162nAIaRCL._SY450_.jpg":[450,450],
"https://lastexample.com/images/I/4162nAIaRCL.jpg":[500,500]}

Answer 1

Try this :

<?php 
$json = '{
    "https://example.com/images/I/4162nAIaRCL._SX425_.jpg":[425,425],
    "https://example.com/images/I/4162nAIaRCL._SY355_.jpg":[355,355],
    "https://example.com/images/I/4162nAIaRCL._SX466_.jpg":[466,466],
    "https://example.com/images/I/4162nAIaRCL._SY450_.jpg":[450,450],
    "https://lastexample.com/images/I/4162nAIaRCL.jpg":[500,500]
}';


$arr = json_decode($json,true);
$arrkeys = array_keys($arr);
$lastkey = end($arrkeys);
echo $lastkey; 
?>

Answer 2

Try, decode it into an array ( json_decode ) then get the keys ( array_keys ), then the last entry ( end / max ).

<?php
$json = '{
    "https://example.com/images/I/4162nAIaRCL._SX425_.jpg": [425, 425],
    "https://example.com/images/I/4162nAIaRCL._SY355_.jpg": [355, 355],
    "https://example.com/images/I/4162nAIaRCL._SX466_.jpg": [466, 466],
    "https://example.com/images/I/4162nAIaRCL._SY450_.jpg": [450, 450],
    "https://lastexample.com/images/I/4162nAIaRCL.jpg": [500, 500]
}';

$array = json_decode($json, true);

$keys = array_keys($array);

echo end($keys); // https://lastexample.com/images/I/4162nAIaRCL.jpg

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