如何从foreach循环中的匹配值获取下一个值

Posted 2021-05-05

如何从循环中的匹配值获取下一个值。数组中需要'1010-1040'键。

<?php

$arr = Array
(
    '0900-0930' => 0,
    '0935-1005' => 0,
    '1010-1040' => 0,
    '1045-1115' => 0
);


$matchVal = '0935-1005';

foreach ($arr as $key => $value) {

    if($matchVal == $key){
        echo $key.'<br />';
    }
    echo next($arr); 
}
?>

提前致谢。

答案

试试这个

$arr = Array
(
    '0900-0930' => 0,
    '0935-1005' => 0,
    '1010-1040' => 0,
    '1045-1115' => 0
);


$matchVal = '0935-1005';

$keys = array_keys($arr);
print $keys[array_search($matchVal,$keys)+1];

产量

1010-1040

另一答案

      <?php 
        $arr = Array
        (
            '0900-0930' => 0,
            '0935-1005' => 0,
            '1010-1040' => 0,
            '1045-1115' => 0
        );
        $keys = array_keys($arr);
        $matchVal = '0935-1005';
        $matched = array_search($matchVal, $keys); // $key = 1;
        $nextindex = $matched + 1;
        $nextValue = $arr[$nextindex];
        ?>

另一答案

请试试这个。

<?php

$arr = Array
(
    '0900-0930' => 0,
    '0935-1005' => 0,
    '1010-1040' => 0,
    '1045-1115' => 0
);


$matchVal = '0935-1005';

foreach ($arr as $key => $value) {

    if($matchVal == $key){
        echo $key.'<br />';
    }
    next($arr);
    echo key($arr)."<br/>;
}
?>