php count array elements with specific key
$cnt = count(array_filter($array,function($element) {
return $element['your_key']=='foo';
}));php count array elements with specific key
$cnt = count(array_filter($array,function($element) {
return $element['your_key']=='foo';
}));php count string in array
<?php
$a[0] = 1;
$a[1] = 3;
$a[2] = 5;
var_dump(count($a));
$b[0] = 7;
$b[5] = 9;
$b[10] = 11;
var_dump(count($b));
var_dump(count(null));
var_dump(count(false));
?>
/* result
int(3)
int(3)
Warning: count(): Parameter must be an array or an object that implements Countable in … on line 12 // as of PHP 7.2
int(0)
Warning: count(): Parameter must be an array or an object that implements Countable in … on line 14 // as of PHP 7.2
int(1)
*/Copyright © 2021 Codeinu
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