@ 2018-10-11T12:17:28Z <?php
$array = [
"foo" => "no",
"foo_contact_firstname" => "Mark",
"foo_email" => "mark@gmail.com",
"foo_address1" => "91",
"foo_address2" => "old road",
"foo_bill" => "no",
"bar" => "yes",
"bar_contact_lastname" => null,
"bar_telephone" => null,
"bar_email" => null,
"bar_address1" => null,
"bar_address2" => null,
"bar_address3" => null,
"bar_address4" => null,
"bar_address5" => null,
"bar_postcode" => null,
"register_contact_firstname" => null,
"register_contact_lastname" => null,
"register_telephone" => null,
"register_email" => null,
"register_address1" => null,
"register_address2" => null,
"register_address3" => null,
"register_address4" => null,
"register_address5" => null,
"register_postcode" => null,
];
$test = array_filter($array, function($key) {
return $key == 'foo';
}, ARRAY_FILTER_USE_KEY );
var_dump($test);
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Output for 5.6.38 , 7.1.0 - 7.1.23 , 7.2.0 - 7.2.33 , 7.3.16 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.4 , 8.3.6 array(1) {
["foo"]=>
string(2) "no"
}
Output for 8.3.5 Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
array(1) {
["foo"]=>
string(2) "no"
}
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171.04 ms | 402 KiB | 173 Q