An introduction to some functions of operating arrays in PHP_PHP Tutorial

Search for a specific value in the array, return TRUE if found, otherwise return FALSE
boolean in_array(mixed needle,array haystack[,boolean strict])

Find a specified key in the array, return if found TRUE otherwise returns FALSE
boolean array_eky_exists(mixed key,array array)

Search for a specific value in the array, if found return TRUE otherwise return FALSE
boolean array_search(mixed needle,array haystack[, boolean strict])

Get a new array composed of all the keys of the array
array array_keys(array array[,mixed search_value])

Get a new array composed of all the values ​​of the array
array array_values(array array)

Determine the array size
integer count(array array[,int mode])

integer sizeof(array array[,int mode])

Statistics the frequency of occurrence of array elements
array array_count_values(array array)

Delete duplicate values ​​in the array and return an array composed of unique values
array array_unique(array array)

Reverse the order of array elements. If preserve_key is TRUE, the order of array key values ​​remains unchanged
array array_reverse(array array[,boolean preserve_key])

Replace array keys and values
array array_flip(array array)

Array order sorting, the sort_flags parameter is optional, the default behavior is
SORT_NUMBERIC, sort by numerical value, useful for sorting integers or floating point numbers

SORT_REGULAR, sort by ASCII value

SORT_STRING, sort in the correct order that is close to what people know

asort function key value order remains unchanged

void sort(array array[,int sort_flags])

void asort(array array[,int sort_flags])

Array sort in reverse order, the sort_flags parameter is optional, the default behavior is
SORT_NUMBERIC, sort by numerical value, useful for sorting integers or floating point numbers

SORT_REGULAR, sort by ASCII value

SORT_STRING, sort in the correct order that is close to what people know

arsort function key value order remains unchanged

void rsort(array array[ ,int sort_flags])

void arsort(array array[,int sort_flags])

Natural sorting of arrays
void natsort(array array)

Case-insensitive Natural sorting
void natcasesort(array array)

Key-value pair array sorting
boolean ksort(array array[,int sort_flags])

Key-value pair array reverse order Sort
boolean krsort(array array[,int sort_flags])

Sort according to user-defined order
void usort(array array,callback function_name)

Merge arrays together , returns a combined array. The back of array_merge covers the front, array_merge_recursive merges together
array array_merge(array array1[array array2...])//More than one

array array_merge_recursive(array array1,array array2[,array...])/ /More than two

keys and values ​​form a new array
array array_combine(array key,array value)

Returns a part of the array, starting from offset and ending at offset+length
array array_slice(array array, int offset [,int length])

Delete all elements starting from offset and ending at offset+length, and return the deleted elements in the form of an array
array array_splice (array, int offset [,int length[,array peplacement]])

Find the intersection of arrays, the key value is the key value in the first array
array array_intersect(array array1,array array2[, arrayN...])

The intersection of arrays contains equal key values, and the key values ​​are the key values ​​in the first array
array array_intersect_assoc(array array1,array array2[,arrayN...])

Find the difference of arrays, the first array has a value that is not found in other arrays
array array_diff(array array1,array array2[,arrayN...])

Find the difference of arrays , the first array contains key values ​​that are equal to values ​​that are not found in other arrays
array array_diffassoc(array array1,array array2[,arrayN...])

Return one or more key values ​​in the array
mixed array_rand(array array[,int num_entries])

Random shuffle function
void shuffle(array input_array)

Sum the values ​​in the array
mixed array_sum (array array);

Decompose the array into a multi-dimensional array, which contains size elements
array array_chunk(array array, int size [,boolean preserve_keys])

http://www.bkjia.com/PHPjc/323960.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/323960.htmlTechArticleSearch for a specific value in the array, return TRUE if found otherwise return FALSE boolean in_array(mixed needle,array haystack[ ,boolean strict]) Find a specified key in the array if...