Wie verkürzt man diese PHP-Funktion?

Question

Ich mache oft curl_multi und ich versuche, eine Methode zu finden, dieses Stück Code zu verkürzen. Ich empfange Daten und wandle sie in JSON und dann in ein Objekt um.

function ($id) { 

//declaring URL 
$url = 'my.dev/file/.$id'; 

$ch_1 = curl_init($url.'6812'); 
$ch_2 = curl_init($url.'1359'); 
$ch_3 = curl_init($url.'207'); 
$ch_4 = curl_init($url.'1513'); 
$ch_5 = curl_init($url.'2361'); 
$ch_6 = curl_init($url.'7936'); 
$ch_7 = curl_init($url.'1391'); 
$ch_8 = curl_init($url.'1619'); 
$ch_9 = curl_init($url.'1617'); 
$ch_10 = curl_init($url.'5300'); 
$ch_11 = curl_init($url.'440'); 
$ch_12 = curl_init($url.'891'); 
$ch_13 = curl_init($url.'563'); 
$ch_14 = curl_init($url.'565'); 
$ch_15 = curl_init($url.'560'); 
$ch_16 = curl_init($url.'9143'); 
$ch_17 = curl_init($url.'9144'); 
$ch_18 = curl_init($url.'562'); 
$ch_19 = curl_init($url.'2434'); 
$ch_20 = curl_init($url.'985'); 
$ch_21 = curl_init($url.'1399'); 
$ch_22 = curl_init($url.'1373'); 
$ch_23 = curl_init($url.'1347'); 
$ch_24 = curl_init($url.'1201'); 
$ch_25 = curl_init($url.'1163'); 
$ch_26 = curl_init($url.'4087'); 
$ch_27 = curl_init($url.'4585'); 
$ch_28 = curl_init($url.'6809'); 
$ch_29 = curl_init($url.'566'); 
$ch_30 = curl_init($url.'9465'); 
$ch_31 = curl_init($url.'11286'); 


curl_setopt($ch_1, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_2, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_3, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_4, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_5, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_6, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_7, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_8, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_9, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_10, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_11, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_12, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_13, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_14, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_15, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_16, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_17, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_18, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_19, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_20, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_21, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_22, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_23, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_24, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_25, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_26, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_27, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_28, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_29, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_30, CURLOPT_RETURNTRANSFER, true); 
curl_setopt($ch_31, CURLOPT_RETURNTRANSFER, true); 

// build the multi-curl handle, adding both $ch 
$mh = curl_multi_init(); 
curl_multi_add_handle($mh, $ch_1); 
curl_multi_add_handle($mh, $ch_2); 
curl_multi_add_handle($mh, $ch_3); 
curl_multi_add_handle($mh, $ch_4); 
curl_multi_add_handle($mh, $ch_5); 
curl_multi_add_handle($mh, $ch_6); 
curl_multi_add_handle($mh, $ch_7); 
curl_multi_add_handle($mh, $ch_8); 
curl_multi_add_handle($mh, $ch_9); 
curl_multi_add_handle($mh, $ch_10); 
curl_multi_add_handle($mh, $ch_11); 
curl_multi_add_handle($mh, $ch_12); 
curl_multi_add_handle($mh, $ch_13); 
curl_multi_add_handle($mh, $ch_14); 
curl_multi_add_handle($mh, $ch_15); 
curl_multi_add_handle($mh, $ch_16); 
curl_multi_add_handle($mh, $ch_17); 
curl_multi_add_handle($mh, $ch_18); 
curl_multi_add_handle($mh, $ch_19); 
curl_multi_add_handle($mh, $ch_20); 
curl_multi_add_handle($mh, $ch_21); 
curl_multi_add_handle($mh, $ch_22); 
curl_multi_add_handle($mh, $ch_23); 
curl_multi_add_handle($mh, $ch_24); 
curl_multi_add_handle($mh, $ch_25); 
curl_multi_add_handle($mh, $ch_26); 
curl_multi_add_handle($mh, $ch_27); 
curl_multi_add_handle($mh, $ch_28); 
curl_multi_add_handle($mh, $ch_29); 
curl_multi_add_handle($mh, $ch_30); 
curl_multi_add_handle($mh, $ch_31); 

// execute all queries simultaneously, and continue when all are complete 
$running = null; 
do { 
    curl_multi_exec($mh, $running); 
} while ($running); 

// all of our requests are done, we can now access the results 
$r_1 = curl_multi_getcontent($ch_1); 
$r_2 = curl_multi_getcontent($ch_2); 
$r_3 = curl_multi_getcontent($ch_3); 
$r_4 = curl_multi_getcontent($ch_4); 
$r_5 = curl_multi_getcontent($ch_5); 
$r_6 = curl_multi_getcontent($ch_6); 
$r_7 = curl_multi_getcontent($ch_7); 
$r_8 = curl_multi_getcontent($ch_8); 
$r_9 = curl_multi_getcontent($ch_9); 
$r_10 = curl_multi_getcontent($ch_10); 
$r_11 = curl_multi_getcontent($ch_11); 
$r_12 = curl_multi_getcontent($ch_12); 
$r_13 = curl_multi_getcontent($ch_13); 
$r_14 = curl_multi_getcontent($ch_14); 
$r_15 = curl_multi_getcontent($ch_15); 
$r_16 = curl_multi_getcontent($ch_16); 
$r_17 = curl_multi_getcontent($ch_17); 
$r_18 = curl_multi_getcontent($ch_18); 
$r_19 = curl_multi_getcontent($ch_19); 
$r_20 = curl_multi_getcontent($ch_20); 
$r_21 = curl_multi_getcontent($ch_21); 
$r_22 = curl_multi_getcontent($ch_22); 
$r_23 = curl_multi_getcontent($ch_23); 
$r_24 = curl_multi_getcontent($ch_24); 
$r_25 = curl_multi_getcontent($ch_25); 
$r_26 = curl_multi_getcontent($ch_26); 
$r_27 = curl_multi_getcontent($ch_27); 
$r_28 = curl_multi_getcontent($ch_28); 
$r_29 = curl_multi_getcontent($ch_29); 
$r_30 = curl_multi_getcontent($ch_30); 
$r_31 = curl_multi_getcontent($ch_31); 

//retornamos lista completa de items 
return collect([json_decode($r_1), json_decode($r_2), json_decode($r_3),json_decode($r_4),json_decode($r_5),json_decode($r_6),json_decode($r_7),json_decode($r_8),json_decode($r_9),json_decode($r_10),json_decode($r_11),json_decode($r_12),json_decode($r_13),json_decode($r_14),json_decode($r_15),json_decode($r_16),json_decode($r_17),json_decode($r_18),json_decode($r_19),json_decode($r_20),json_decode($r_21),json_decode($r_22),json_decode($r_23),json_decode($r_24),json_decode($r_25),json_decode($r_26),json_decode($r_27),json_decode($r_28),json_decode($r_29),json_decode($r_30),json_decode($r_31)]); // same output as first example} 

Answer 1

Der Schlüssel dies zu einer Verkürzung dynamisch benannten Variablen ist das Verständnis, auch bekannt als variable Variablen. See the docs

$url = "my.dev/file/.$id"; 
$nums = [6812,1359,207,1513...]; //numbers to append to the end of URLs 
$count = count($nums); // number of curl operations 

$mh = curl_multi_init(); 
for($i=1; $i<=$count; $i++){ 

    $ch = "ch_$i"; 

    // when $i is 1, 2... $$ch is the same as $ch_1, $ch_2... 
    $$ch = curl_init($url.$nums[$i-1]); 
    curl_setopt($$ch, CURLOPT_RETURNTRANSFER, true); 
    curl_multi_add_handle($mh, $$ch); 
} 

// execute all queries 
$running = null; 
do {curl_multi_exec($mh, $running);} while ($running); 

//access results 
$results = []; 
for($i=1; $i<=$count; $i++){ 
    $ch = "ch_$i"; 
    $r = "r_$i"; 

    //when $i===1, $$r === $r_1 and $$ch === $ch_1 
    $$r = curl_multi_getcontent($$ch); 
    $results[] = json_decode($$r); 
} 

return collect($results); 

By the way, im Code, die Linie, die die URL erklärt soll doppelte Anführungszeichen verwenden.