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<?php $textData = pack("N", '333333'); var_dump($textData); $textData = unpack("N",$textData); var_dump($textData); echo mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CFB);
Output for 7.0.6 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(4) "" array(1) { [1]=> int(333333) } Fatal error: Uncaught Error: Call to undefined function mcrypt_get_iv_size() in /in/ThZ3e:6 Stack trace: #0 {main} thrown in /in/ThZ3e on line 6
Process exited with code 255.
Output for 5.4.8 - 5.4.45, 5.5.24 - 5.5.34, 5.6.7 - 5.6.20, 7.0.0 - 7.0.5
string(4) "" array(1) { [1]=> int(333333) } 16
Output for 5.5.35, 5.6.21 - 5.6.28
string(4) "" array(1) { [1]=> int(333333) } Fatal error: Call to undefined function mcrypt_get_iv_size() in /in/ThZ3e on line 6
Process exited with code 255.
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213.47 ms | 402 KiB | 250 Q