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f759936591
This is part 1 of the 'Saner Numeric Strings' RFC: https://wiki.php.net/rfc/saner-numeric-strings
93 lines
1.8 KiB
PHP
93 lines
1.8 KiB
PHP
--TEST--
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String to number comparison
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--FILE--
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<?php
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// This tests the examples from the RFC.
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function format($val) {
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if (is_float($val)) {
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if (is_nan($val)) return "NAN";
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if ($val == INF) return "INF";
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if ($val == -INF) return "-INF";
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}
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return json_encode($val);
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}
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function compare_eq($val1, $val2) {
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echo format($val1), " == ", format($val2), ": ", format($val1 == $val2), "\n";
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}
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function compare_3way($val1, $val2) {
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echo format($val1), " <=> ", format($val2), ": ", format($val1 <=> $val2), "\n";
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}
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compare_eq(42, "000042");
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compare_eq(42, "42.0");
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compare_eq(42.0, "+42.0E0");
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compare_eq(0, "0e214987142012");
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echo "\n";
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compare_eq("42", "000042");
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compare_eq("42", "42.0");
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compare_eq("42.0", "+42.0E0");
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compare_eq("0", "0e214987142012");
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echo "\n";
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compare_eq(42, " 42");
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compare_eq(42, "42 ");
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compare_eq(42, "42abc");
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compare_eq(42, "abc42");
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compare_eq( 0, "abc42");
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echo "\n";
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compare_eq(INF, "INF");
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compare_eq(-INF, "-INF");
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compare_eq(NAN, "NAN");
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compare_eq(INF, "1e1000");
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compare_eq(-INF, "-1e1000");
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echo "\n";
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$float = 1.75;
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echo "precision=14:\n";
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ini_set('precision', 14);
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compare_3way($float, "1.75abc");
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compare_3way((string) $float, "1.75abc");
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echo "precision=0:\n";
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ini_set('precision', 0);
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compare_3way($float, "1.75abc");
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compare_3way((string) $float, "1.75abc");
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?>
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--EXPECT--
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42 == "000042": true
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42 == "42.0": true
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42 == "+42.0E0": true
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0 == "0e214987142012": true
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"42" == "000042": true
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"42" == "42.0": true
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"42.0" == "+42.0E0": true
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"0" == "0e214987142012": true
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42 == " 42": true
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42 == "42 ": true
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42 == "42abc": false
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42 == "abc42": false
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0 == "abc42": false
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INF == "INF": true
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-INF == "-INF": true
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NAN == "NAN": false
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INF == "1e1000": true
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-INF == "-1e1000": true
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precision=14:
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1.75 <=> "1.75abc": -1
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"1.75" <=> "1.75abc": -1
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precision=0:
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1.75 <=> "1.75abc": 1
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"2" <=> "1.75abc": 1
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