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<?php var_dump(strlen(iconv('utf-8', 'utf-16le', 'A B C')) / 2); # correct var_dump(strlen(iconv('utf-8', 'utf-16le', '🎖')) / 2); # correct var_dump(strlen(mb_convert_encoding('A B C', 'UTF-32BE', 'UTF-8')) / 2); # off by 5 chars var_dump(strlen(mb_convert_encoding('🎖', 'UTF-32BE', 'UTF-8')) / 2); # correct var_dump(mb_strlen(mb_convert_encoding('A B C', 'UTF-32BE', 'UTF-8')) / 2); # off by 5 chars var_dump(mb_strlen(mb_convert_encoding('🎖', 'UTF-32BE', 'UTF-8')) / 2); # correct
Output for 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: iconv(): Wrong encoding, conversion from "utf-8" to "utf-16le" is not allowed in /in/kTNkF on line 4 int(0) Warning: iconv(): Wrong encoding, conversion from "utf-8" to "utf-16le" is not allowed in /in/kTNkF on line 5 int(0) int(10) int(2) int(10) float(1.5)
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: iconv(): Wrong encoding, conversion from "utf-8" to "utf-16le" is not allowed in /in/kTNkF on line 4 int(0) Warning: iconv(): Wrong encoding, conversion from "utf-8" to "utf-16le" is not allowed in /in/kTNkF on line 5 int(0) int(10) int(2) int(10) float(1.5)
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function iconv() in /in/kTNkF:4 Stack trace: #0 {main} thrown in /in/kTNkF on line 4
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 8.0.0 - 8.0.12
int(5) int(2) int(10) int(2) int(10) float(1.5)
Output for 7.4.26 - 7.4.32
Notice: iconv(): Wrong charset, conversion from `utf-8' to `utf-16le' is not allowed in /in/kTNkF on line 4 int(0) Notice: iconv(): Wrong charset, conversion from `utf-8' to `utf-16le' is not allowed in /in/kTNkF on line 5 int(0) int(10) int(2) int(10) float(1.5)

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