Find key in array php
(PHP 4 >= 4.0.5, PHP 5, PHP 7, PHP 8) Show array_search — Searches the array for a given value and returns the first corresponding key if successful Descriptionarray_search(mixed Parametersneedle The searched value.
haystack The array. strict If the third parameter Return Values Returns the key for If Warning This function may return Boolean ExamplesExample #1 array_search() example
See Also
turabgarip at gmail dot com ¶ 5 years ago
opencart dot ocfilter at gmail dot com ¶ 1 year ago
(array_search('needle', [ 0 => 0 ])); // int(0) (!)var_dump(array_search('needle', [ 0 => 0 ], true)); // bool(false)?> thinbegin at gmail dot com ¶ 4 years ago
cue at openxbox dot com ¶ 19 years ago
while (($key = array_search("a", $code)) != NULL)
stefano@takys dot it ¶ 11 years ago
nordseebaer at gmx dot de ¶ 2 years ago
yasien dot dwieb at gmail dot com ¶ 2 years ago
maciej at speccode dot com ¶ 7 years ago
= [ RichGC ¶ 16 years ago
$i = array_search("apple", $fruit_array)) n-regen ¶ 13 years ago
codeslinger at compsalot dot com ¶ 12 years ago
[$index] = array('key'=>$key, 'data'=>'foo');
stooshie at gmail dot com ¶ 10 years ago
helenadeus at gmail dot com ¶ 13 years ago
= array('a','b','a','b');$needle = 'a';print_r(array_search_all($needle, $haystack));//Output will be azaozz, gmail ¶ 13 years ago
.array_search("str1", $a, true).", andreas dot damm at maxmachine dot de ¶ 14 years ago
kermes [at] thesevens [dot] net ¶ 15 years ago
$result; How do I find a key in an array?PHP array_key_exists() Function
The array_key_exists() function checks an array for a specified key, and returns true if the key exists and false if the key does not exist.
How do you check if a key exists in a PHP array?Answer: Use the PHP array_key_exists() function
You can use the PHP array_key_exists() function to test whether a given key or index exists in an array or not. This function returns TRUE on success or FALSE on failure.
What is key in PHP array?The key() function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, key() returns null .
How get key of multidimensional array in PHP?Retrieving Values: We can retrieve the value of multidimensional array using the following method:. Using key: We can use key of the associative array to directly retrieve the data value. ... . Using foreach loop: We can use foreach loop to retrieve value of each key associated inside the multidimensional associative array.. |