Bifalgorithm post · Computer science one · Non-Contiguous Indices

How can strings be used as indices in PHP arrays?

How can strings be used as indices in PHP arrays? (Computer science one · Non-Contiguous Indices) — "Since arrays in PHP are associative arrays, keys are not l…

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PHP arrays support associative keys
PHP arrays are associative arrays
Integer values can be used as keys
Strings can be used as keys to index elements
The example creates and uses an array
$arr[0] = 5;
$arr["foo"] = 10; and $arr["hello"] = "world";
The value associated with "hello" is printed
Strings containing integer values are type-juggled into numeric keys
$arr["10"] = 3; is equivalent to $arr[10] = 3;
Strings containing floating-point values remain strings
$arr["3.15"] = 7; keeps "3.15" as a string key

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How can strings be used as indices in PHP arrays?

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Computer science one

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sam23

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"Since arrays in PHP are associative arrays, keys are not limited to integers. You can also use strings as keys to index elements.\n\n1 $arr = array();\n\n2 $arr[0] = 5;\n\n3 $arr[\"foo\"] = 10;\n\n4 $arr[\"hello\"] = \"world\";\n\n5\n\n6 print \"value = \" . $arr[\"hello\"];\n\nNote that strings that contain integer values will be type-juggled into their numeric values. For example, $arr[\"10\"] = 3; will be equivalent to $arr[10] = 3;. However, strings containing floating point values will not be coerced but will remain as strings, $arr[\"3.15\"] = 7;, for example."

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