Php 如果元素以某个值开头,则从数组中删除键
如何删除以TOR示例键[27]开头的元素Php 如果元素以某个值开头,则从数组中删除键,php,arrays,unset,Php,Arrays,Unset,如何删除以TOR示例键[27]开头的元素 Array ( [1] => memory_target [2] => vif_2_rx [3] => vif_2_tx [4] => memory [5] => vbd_xvda_read [6] => vbd_xvda_write [7] => vbd_xvdd_read [8] => vbd_xvdd_write [9] =>
Array
(
[1] => memory_target
[2] => vif_2_rx
[3] => vif_2_tx
[4] => memory
[5] => vbd_xvda_read
[6] => vbd_xvda_write
[7] => vbd_xvdd_read
[8] => vbd_xvdd_write
[9] => vif_1_rx
[10] => vif_1_tx
[11] => vif_0_rx
[12] => vif_0_tx
[13] => cpu0
[27] => TOR-SRV65
)
这就是我迄今为止所尝试的
if(($key = array_search($del_val, $messages)) !== false) {
unset($messages[$key]);
}
但却没能让它发挥作用 您可以简单地将开始时具有TOR
的元素取出,如下所示:
$messages = array_filter($messages, function($v){
return !(substr(trim($v), 0, 3) === "TOR");
});
不区分大小写的版本:
$messages = array_filter($messages, function($v){
return !(strtoupper(substr(trim($v), 0, 3)) === "TOR");
});
编辑:
使用更简单(如果需要区分大小写,请删除修饰符i
):
尝试:
我正在使用此函数从数组中删除一个键
function removeValueFromArray($array, $key, $value){
foreach($array as $subKey => $subArray){
if($subArray[$key] == $value){
unset($array[$subKey]);
}
}
return $array;
}
此函数根据特定值从数组中删除密钥并返回最终数组此问题的答案在哪里?
$array = array(
'memory_target',
'vif_2_rx',
'TOR-SRV65'
);
foreach ($array as $key => $value) {
if (strtolower(substr($value, 0, 3)) == 'tor') {
unset($array[$key]);
}
}
print_r($array); // Output => Array ( [0] => memory_target [1] => vif_2_rx )
function removeValueFromArray($array, $key, $value){
foreach($array as $subKey => $subArray){
if($subArray[$key] == $value){
unset($array[$subKey]);
}
}
return $array;
}