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<?php var_dump(substr('FooBar', 42)); var_dump(substr('FooBar', -42, 3)); var_dump(substr('FooBar', 42, 3)); var_dump(mb_substr('FooBar', 42, 3)); var_dump(iconv_substr('FooBar', 42, 3)); var_dump(grapheme_substr('FooBar', 42, 3));
Output for 8.0.0 - 8.0.12, 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
string(0) "" string(3) "Foo" string(0) "" string(0) "" string(0) "" string(0) ""
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 string(0) "" string(3) "Foo" string(0) "" string(0) "" string(0) "" string(0) ""
Output for 8.0.13
string(0) "" string(3) "Foo" string(0) "" string(0) "" Fatal error: Uncaught Error: Call to undefined function iconv_substr() in /in/3H05i:7 Stack trace: #0 {main} thrown in /in/3H05i on line 7
Process exited with code 255.
Output for 7.3.32, 7.4.26, 7.4.33
bool(false) string(3) "Foo" bool(false) string(0) "" Fatal error: Uncaught Error: Call to undefined function iconv_substr() in /in/3H05i:7 Stack trace: #0 {main} thrown in /in/3H05i on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.3.33, 7.4.0 - 7.4.25, 7.4.27 - 7.4.32
bool(false) string(3) "Foo" bool(false) string(0) "" bool(false) bool(false)
preferences:
162.78 ms | 402 KiB | 182 Q