搜索包含字符串的 PHP 数组元素
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Search for PHP array element containing string
提问by UserIsCorrupt
$example = array('An example','Another example','Last example');
How can I do a loose search for the word "Last" in the above array?
如何在上述数组中对单词“Last”进行松散搜索？
echo array_search('Last example',$example);
The code above will only echo the value's key if the needle matches everything in the value exactly, which is what I don't want. I want something like this:
如果指针与值中的所有内容完全匹配，上面的代码只会回显值的键，这是我不想要的。我想要这样的东西：
echo array_search('Last',$example);
And I want the value's key to echo if the value contains the word "Last".
如果该值包含“Last”一词，我希望该值的键回显。
回答by Aleks G
To find values that match your search criteria, you can use array_filterfunction:
要查找与您的搜索条件匹配的值，您可以使用array_filter函数：
$example = array('An example','Another example','Last example');
$searchword = 'last';
$matches = array_filter($example, function($var) use ($searchword) { return preg_match("/\b$searchword\b/i", $var); });
Now $matchesarray will contain only elements from your original array that contain word last(case-insensitive).
现在$matches数组将只包含原始数组中包含单词last（不区分大小写）的元素。
If you need to find keys of the values that match the criteria, then you need to loop over the array:
如果需要查找与条件匹配的值的键，则需要遍历数组：
$example = array('An example','Another example','One Example','Last example');
$searchword = 'last';
$matches = array();
foreach($example as $k=>$v) {
if(preg_match("/\b$searchword\b/i", $v)) {
$matches[$k] = $v;
}
}
Now array $matchescontains key-value pairs from the original array where values contain (case- insensitive) word last.
现在数组$matches包含来自原始数组的键值对，其中值包含（不区分大小写）单词last。
回答by Wayne Whitty
function customSearch($keyword, $arrayToSearch){
foreach($arrayToSearch as $key => $arrayItem){
if( stristr( $arrayItem, $keyword ) ){
return $key;
}
}
}
回答by xdazz
$input= array('An example','Another example','Last example');
$needle = 'Last';
$ret = array_keys(array_filter($input, function($var) use ($needle){
return strpos($var, $needle) !== false;
}));
This will give you all the keys whose value contain the needle.
这将为您提供其值包含针的所有键。
回答by aDaemon
It finds an element's key with first match:
它找到第一个匹配项的元素的键：
echo key(preg_grep('/\b$searchword\b/i', $example));
And if you need all keys use foreach:
如果您需要所有键，请使用 foreach：
foreach (preg_grep('/\b$searchword\b/i', $example) as $key => $value) {
echo $key;
}
回答by Josan Iracheta
I was also looking for a solution to OP's problem and I stumbled upon this question via Google. However, none of these answers did it for me so I came up with something a little different that works well.
我也在寻找 OP 问题的解决方案，我通过谷歌偶然发现了这个问题。然而，这些答案都不适合我，所以我想出了一些不同的东西，但效果很好。
$arr = array("YD-100 BLACK", "YD-100 GREEN", "YD-100 RED", "YJ-100 BLACK");
//split model number from color
$model = explode(" ",$arr[0])
//find all values that match the model number
$match_values = array_filter($arr, function($val,$key) use (&$model) { return stristr($val, $model[0]);}, ARRAY_FILTER_USE_BOTH);
//returns
//[0] => YD-100 BLACK
//[1] => YD-100 GREEN
//[2] => YD-100 RED
This will only work with PHP 5.6.0 and above.
这仅适用于 PHP 5.6.0 及更高版本。
回答by Dario
I do not like regex because as far as I know they are always slower than a normal string function. So my solution is:
我不喜欢正则表达式，因为据我所知，它们总是比普通的字符串函数慢。所以我的解决方案是：
function substr_in_array($needle, array $haystack)
{
foreach($haystack as $value)
{
if(strpos($value, $needle) !== FALSE) return TRUE;
}
return FALSE;
}
function substr_in_array($needle, array $haystack)
{
foreach($haystack as $value)
{
if(strpos($value, $needle) !== FALSE) return TRUE;
}
return FALSE;
}
回答by Dario
The answer that Aleks G has given is not accurate enough.
Aleks G 给出的答案不够准确。
$example = array('An example','Another example','One Example','Last example');
$searchword = 'last';
$matches = array();
foreach($example as $k=>$v) {
if(preg_match("/\b$searchword\b/i", $v)) {
$matches[$k] = $v;
}
}
The line
线
if(preg_match("/\b$searchword\b/i", $v)) {
should be replaced by these ones
应该被这些替换
$match_result = preg_match("/\b$searchword\b/i", $v);
if( $match_result!== false && $match_result === 1 ) {
Or more simply
或者更简单
if( preg_match("/\b$searchword\b/i", $v) === 1 ) {
In agreement with http://php.net/manual/en/function.preg-match.php
同意http://php.net/manual/en/function.preg-match.php
preg_match() returns 1 if the pattern matches given subject, 0 if it does not, or FALSE if an error occurred.
如果模式匹配给定主题，则 preg_match() 返回 1，如果不匹配则返回 0，如果发生错误则返回 FALSE。
