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<?php function validatePrintf($format, $arguments) { if (preg_match_all("~%(?:(\d+)[$])?[-+]?(?:[ 0]|['].)?(?:[-]?\d+)?(?:[.]\d+)?[%bcdeEufFgGosxX]~", $format, $expected) > 0) { return (count((array) $arguments) >= intval(max($expected[1]))); } return false; } var_dump(validatePrintf('The %2$s contains %1$d monkeys'), array(5, 'tree'));
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught ArgumentCountError: Too few arguments to function validatePrintf(), 1 passed in /in/P9RFU on line 12 and exactly 2 expected in /in/P9RFU:2 Stack trace: #0 /in/P9RFU(12): validatePrintf('The %2$s contai...') #1 {main} thrown in /in/P9RFU on line 2
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33
Warning: Missing argument 2 for validatePrintf(), called in /in/P9RFU on line 12 and defined in /in/P9RFU on line 2 Notice: Undefined variable: arguments in /in/P9RFU on line 6 bool(false) array(2) { [0]=> int(5) [1]=> string(4) "tree" }
Output for 5.0.0 - 5.0.5
Warning: Missing argument 2 for validatePrintf() in /in/P9RFU on line 2 bool(false) array(2) { [0]=> int(5) [1]=> string(4) "tree" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Warning: Missing argument 2 for validateprintf() in /in/P9RFU on line 2 bool(false) array(2) { [0]=> int(5) [1]=> string(4) "tree" }

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