php method to remove empty elements in an array: 1. Use the "function myfunction($v) {...}" method to remove empty elements; 2. Use "foreach ($urlArr as $key => ; $val) {...}" method removes empty elements from the array.
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The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer
How to remove empty elements in an array in php ?
How to remove empty elements from PHP array
Method 1 to remove empty elements: (Keep the key value unchanged)
Original array:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <?php
Array(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] =>
[5] =>
[6] =>
[7] => fdsfdsfdsfds
[8] => fdsfdsfdsfdsfdsfsd
[9] => ssssssss
[10] =>
[11] => sssssssssssssssssssss)
?>
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Array after processing
1 2 3 4 5 6 7 8 9 10 11 | <?php
Array(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[7] => fdsfdsfdsfds
[8] => fdsfdsfdsfdsfdsfsd
[9] => ssssssss
[11] => sssssssssssssssssssss)
?>
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Usage method:
1 2 3 4 5 6 7 8 9 | <?php
function myfunction( $v ) {
if ( $v != "" ) {
return true;
}
return false;
}
print_r( array_filter ( $urlArr , "myfunction" ));
?>
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Remove empty elements Method 2: (key value auto-increment)
Original array:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | <?php
Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] =>
[5] =>
[6] =>
[7] => fdsfdsfdsfds
[8] => fdsfdsfdsfdsfdsfsd
[9] => ssssssss
[10] =>
[11] => sssssssssssssssssssss
)
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Processing After the array:
1 2 3 4 5 6 7 8 9 10 11 | Array
(
[0] => sdfdsdsdsfrrrrrrr
[1] => fdsfdsdsfds
[2] => fdsfdsdsfdsds
[3] => fdsdsfdsfds
[4] => fdsfdsfdsfds
[5] => fdsfdsfdsfdsfdsfsd
[6] => ssssssss
[7] => sssssssssssssssssssss
)
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Usage:
1 2 3 4 5 6 7 | $arr = array ();
foreach ( $urlArr as $key => $val ) {
if ( empty ( $val )) {
continue ;
}
$arr [] = $val ;
}
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Recommended learning: "PHP Video Tutorial"
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