PHP array_walk() Function6 Jan 2025 | 2 min read The array_walk( ) function is an inbuilt function of PHP. It is used to apply a user supplied function to every element of an array. This function was introduced in 4.0. SyntaxParameters
Return ValuesThe array_walk( ) function returns true on success or false on failure. Example 1Output: The key a has the value youtube The key b has the value google The key c has the value whatsapp Example 2Output: Javatpoint tutorial1 has php Javatpoint tutorial2 has java Javatpoint tutorial3 has python Example 3Output: cricket and sachin have been paired together. hockey and sandeep have been paired together. Example 4Output: The key a has the value aajtak. The key b has the value zee news. The key c has the value ndtv. Next TopicPHP String |
The array_intersect( ) function is used to Computes the intersection of arrays. It compares two or more arrays and returns an array containing all the values of the first array that are present in other arrays. In this operation, keys are preserved. This function was...
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PHP pos() Function The PHP pos( ) function is used to fetch the value of the current element in an array. The PHP pos( ) function is an alias of current( ) function. This function was introduced in PHP 4.0. Syntax pos($array); Parameter Parameter Description Is compulsory array Specifies the array to use. compulsory Returns The pos(...
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PHP sort() Function The PHP sort( ) function is used to sort the array elements in ascending order. This function was introduced in PHP 4.0. Syntax bool sort ( array &$array [, int $sort_flags = SORT_REGULAR ] ); Parameter Parameter Description Is compulsory array Specifies the array to be sorted. compulsory Sort flags Sorting behavior. Possible type : SORT_REGULAR...
1 min read
The array_key_first( ) function is used to get the first key of an array. This function was introduced in PHP 7.3.0 Syntax mixed array_key_first ( array $array ); Parameters Parameter Description Is compulsory array Specifies the array. compulsory Return Values The array_key_first( ) function returns the first key of the array if the array is not...
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It is an inbuilt function in PHP. The array_column() function is used to return the values from a single column in the input array. This function is introduced in PHP 5.5. Syntax array_column(array,column_key,index_key); Parameter Description Is compulsory array Specifies the multi-dimensional array to use compulsory Column_key This parameter may be an integer or a string...
2 min read
The array_reverse() function is a inbuilt function of PHP. The array_reverse( ) function is used to reverse the order of the elements in an array. This function was introduced in PHP 4.0. Syntax array array_reverse ( array $array [, bool $preserve_keys = FALSE ] ); Parameter Parameter Description Is compulsory array Specifies an...
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The array_reduce() function is a inbuilt function of PHP. The array_reduce( ) function is used to reduce the array to a single value using a callback function. This function was introduced in PHP 4.0.5. Syntax mixed array_reduce ( array $array , callable $callback [, mixed $initial =...
1 min read
The array_keys() function is used to get all the keys or a subset of the keys of an array. It returns the keys, numeric and string, from the input array. This function was introduced in PHP 4.0. Syntax array_keys(array1,value,strict); Parameter Parameter Description Is compulsory array Specifies an array. compulsory search_value Specify a value, then only the...
1 min read
PHP array_change_key_case() Function It is an inbuilt function of PHP. The array_change_key_case() function returns an array with all arrays keys in lower case or upper case. Syntax array_change_key_case(array,case); Parameter Description Is compulsory array Specifies the array to use compulsory case Case to use(Upper or Lower) optional Important Note: If the second parameter is avoided then by default the...
1 min read
The array_replace_recursive() function is an inbuilt function of PHP. The array_replace_recursive( ) function is used to replace the values from passed arrays into the first array recursively. This function was introduced in PHP 5.3.0. Syntax array array_replace_recursive ( array $array1 [, array $... ] ); Parameter Parameter Description Is compulsory array1 Specifies an...
2 min read
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