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php delete array item by value not key

$colors = array("blue","green","red");

//delete element in array by value "green"
if (($key = array_search("green", $colors)) !== false) {
    unset($colors[$key]);
}
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unset in php array key pair value

<?php
$array = array('a','b','c','d','e');
unset($array[4]);
print_r($array);
?>
Array
(
    [0] => a
    [1] => b
    [2] => c
    [3] => d
)  
Comment

php unset array key

unset($dataArray['key']);
Comment

unset by key name php

unset($array['key-here']);
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