PHP two-dimensional array to verify whether a value exists
- WBOYOriginal
- 2016-10-17 09:12:062257browse
PHP determines whether the number is in a two-dimensional array $arr = array( <br>
array('a', 'b'), <br>
array('c', 'd') <br>
); <br>
<br>
in_array('a', $arr); // What is returned at this time is always false <br>
deep_in_array('a', $arr); // Returns true value at this time <br>
<br>
function deep_in_array($value, $array) { <br>
foreach($array as $item) { <br>
If(!is_array($item)) { <br>
if ($item == $value)
return true;
} Else {s
continue;
If(in_array($value, $item)) { <br>
Return true;
} else if(deep_in_array($value, $item)) {
Return true;
} <br>
} <br>
Return false; <br>
}<br> <br><br><br><br>
<br>