3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "this is a long string"; $length = strlen($str); $dir = -1; $delta = $length; $maxlength = 12; while(intval($delta)){ $delta = $delta / 2; $length = $length + $dir * $delta; if($dir * (strlen(substr($str, 0, $length)) - $maxlength) > 0) $dir = -$dir; echo substr($str, 0, $length)." ". $delta. "\n"; } ?>
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Implicit conversion from float 10.5 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 10.5 to int loses precision in /in/g1N2m on line 15 this is a 10.5 Deprecated: Implicit conversion from float 15.75 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 15.75 to int loses precision in /in/g1N2m on line 15 this is a long 5.25 Deprecated: Implicit conversion from float 13.125 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 13.125 to int loses precision in /in/g1N2m on line 15 this is a lon 2.625 Deprecated: Implicit conversion from float 11.8125 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 11.8125 to int loses precision in /in/g1N2m on line 15 this is a l 1.3125 Deprecated: Implicit conversion from float 12.46875 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 12.46875 to int loses precision in /in/g1N2m on line 15 this is a lo 0.65625
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 Deprecated: Implicit conversion from float 10.5 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 10.5 to int loses precision in /in/g1N2m on line 15 this is a 10.5 Deprecated: Implicit conversion from float 15.75 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 15.75 to int loses precision in /in/g1N2m on line 15 this is a long 5.25 Deprecated: Implicit conversion from float 13.125 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 13.125 to int loses precision in /in/g1N2m on line 15 this is a lon 2.625 Deprecated: Implicit conversion from float 11.8125 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 11.8125 to int loses precision in /in/g1N2m on line 15 this is a l 1.3125 Deprecated: Implicit conversion from float 12.46875 to int loses precision in /in/g1N2m on line 14 Deprecated: Implicit conversion from float 12.46875 to int loses precision in /in/g1N2m on line 15 this is a lo 0.65625
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 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
this is a 10.5 this is a long 5.25 this is a lon 2.625 this is a l 1.3125 this is a lo 0.65625

preferences:
179.69 ms | 403 KiB | 291 Q