Remove duplicate entries of a specific key from a two-dimensional php Array

Php two-dimensional array remove repeated items of a specific key no two-dimensional array remove repeated items of a specific key publicfunctionarray_unset ($ arr, $ key) {$ arr-input array $ key-the key value to be judged to create a target array $ resarray (); foreach ($ arras $ value) {check whether there are repeated items if (isset ($ res [$ value [$ ke

Php two-dimensional array removes repeated items of a specific key // two-dimensional array removes repeated items of a specific key public function array_unset ($ arr, $ key) {// $ arr-input array $ key-key value to be judged // create a target array $ res = array (); foreach ($ arr as $ value) {// check whether there are repeated items if (isset ($ res [$ value [$ ke

Remove duplicate entries of a specific key from a two-dimensional php Array <无>

// Remove duplicate public function array_unset ($ arr, $ key) for a two-dimensional array) {// $ arr-> input array $ key-> key value to be judged // create a target array $ res = array (); foreach ($ arr as $ value) {// check whether there are repeated items if (isset ($ res [$ value [$ key]) {// yes: Destroy unset ($ value [$ key]);} else {$ res [$ value [$ key] = $ value ;}} return $ res ;}