<?php
$arr = array('1', '', '2', '3', '0');
// Incorrect:
print_r(array_filter($arr));
// Correct:
print_r(array_filter($arr, 'strlen'));
//Custom
print_r(array_filter($arr, function ($val) {if ($val > 0) {return true;} else {return false;}}));$colors = array("red","","blue",NULL);
$colorsNoEmptyOrNull = array_filter($colors, function($v){
return !is_null($v) && $v !== '';
});
//$colorsNoEmptyOrNull is now ["red","blue"]array_filter(explode('/', '/home/teste sdsd/ /'), 'trim');
//Result
[
1 => "home",
2 => "teste sdsd",
]
//-----------
array_filter(explode('/', '/home/teste sdsd/ /'), 'strlen')
//Result
[
1 => "home",
2 => "teste sdsd",
3 => " ",
]array_filter(explode('/', '/home/teste sdsd/ /'), 'trim');
//Result
[
1 => "home",
2 => "teste sdsd",
]
//-----------
array_filter(explode('/', '/home/teste sdsd/ /'), 'strlen')
//Result
[
1 => "home",
2 => "teste sdsd",
3 => " ",
]