What is the best method for converting a PHP array into a string?
I have the variable $type which is an array of types.
$type = $_POST[type];
I want to store it as a single string in my database with each entry separated by | :
Sports|Festivals|Other
A simple solution that comes to mind: combine array_filter and strpos;
$strings = array('Apple', 'Banana', 'Orange');
$substrings = array('pp', 'range');
$result = array_filter($strings, function($item) use($substrings) {
foreach($substrings as $substring)
if(strpos($item, $substring) !== FALSE) return TRUE;
return FALSE;
});
To reset indices, you can use the array_values function.
If you echo an array, it will either give you an error or just output "Array".
In your second example, $products[101] is also an array.
So you can do this:
foreach($products as $product){
foreach($product as $key => $val){
echo "$key: $val";
}
}
Or use print_r to output the data in an array:
foreach($products as $product){
print_r($product);
}
Here is a way to do the job:
$in = array(
"%@-H-e-l-l-o-7-9#$%",
"Hi$73",
"????????!",
"!",
"",
"?55?W",
'$abc$$$',
"?????_",
"34.5",
'#_!',
);
foreach($in as $elem) {
preg_match('/^([^pLpN]*)((?=[pLpN]|$)[^_]*(?<=[pLpN])|^)?([^pLpN]*)$/u', $elem, $m);
printf("'%15s'%s'%10s't%s'%10s't%s'%10s'%s", "$elem","=> (1): ",$m[1],"(2): ",$m[2], "(3): ",$m[3],"n");
}
Where:
pL stands for any letter in any languagepN stands for any number in any languageOutput:
'%@-H-e-l-l-o-7-9#$%'=> (1): ' %@-' (2): 'H-e-l-l-o-7-9' (3): ' #$%'
' Hi$73'=> (1): ' ' (2): ' Hi$73' (3): ' '
'????????!'=> (1): ' ' (2): '????????' (3): ' !'
' !'=> (1): ' !' (2): ' ' (3): ' '
' '=> (1): ' ' (2): ' ' (3): ' '
' ?55?W'=> (1): ' ' (2): ' ?55?W' (3): ' '
' $abc$$$'=> (1): ' $' (2): ' abc' (3): ' $$$'
' ?????_'=> (1): ' ' (2): '?????' (3): ' _'
' 34.5'=> (1): ' ' (2): ' 34.5' (3): ' '
' #_!'=> (1): ' #_!' (2): ' ' (3): ' '
This should work with PHP 7:
class foo {
var $bar = 'I am bar.';
}
$foo = new foo();
$bar = 'bar';
$baz = array('foo', 'bar', 'baz', 'quux');
echo "{$foo->$bar}n";
echo "{$foo->{$baz[1]}}n";
This is caused because in PHP 5 the following line:
echo "{$foo->$baz[1]}n";
is interpreted as:
echo "{$foo->{$baz[1]}}n";
While in PHP 7 it's interpreted as:
echo "{{$foo->$baz}[1]}n";
And so in PHP 7 it's passing the entire array to $foo instead of just that element.
Use implode