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php删除数组中指定值方法比较

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Release: 2016-06-13 10:03:50
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你自己也一个 函数呀 php教程 内置的很多函数都有问题(不是错误,是适用方位窄)

for(旧数组.....){
  if(是要删除的值)
    continue
  $newArr[]=每个值
}

return $newArr

实例

Array([0] => Hello[1] => world.[2] => It's[3] => a[4] => beautiful[5] => day.)

foreach($array as $k=>$v){
  if($v == 'day'){
  unset($array[$k]):
}
}

利用foreach效率不高下在, 看php自带函数

$arr = array("Hello","world","It's","beautiful","day");

实例一

$arr = array_flip($arr);

unset($arr['world']);

$arr = array_flip($arr);

print_r($arr);

实例二

array_search() 函数与 in_array() 一样,在数组中查找一个键值。如果找到了该值,匹配元素的键名会被返回。如果没找到,则返回 false。

 

$arr = Array([0] => Hello[1] => world.[2] => It's[3] => a[4] => beautiful[5] => day.);

if(($key = array_search('day',$arr))){

    unset($arr[$key]);

}


实例三

array_splice() 函数与 array_slice() 函数类似,选择数组中的一系列元素,但不返回,而是删除它们并用其它值代替。

 

if(($key = array_search('day',$arr))){

    array_splice($arr, $key,1);

}

source:php.cn
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