3v4l.org

run code in 300+ PHP versions simultaneously
<?php $lines = array('link1', 'link2', 'link3'); $imgSrc = $lines[array_rand($lines)]; $lineNumber = array_search($imgSrc, $lines); echo json_encode(array($lineNumber => $imgSrc));
Output for 5.2.1, 5.2.4, 5.2.6 - 5.2.7, 5.2.9 - 5.2.10, 5.2.12, 5.2.14, 5.3.0 - 5.3.22, 5.3.24, 5.3.26 - 5.3.29, 5.4.3, 5.4.5, 5.4.7, 5.4.14 - 5.4.15, 5.4.29, 5.4.38, 5.5.0, 5.5.4, 5.5.7 - 5.5.8, 5.5.13, 5.5.26, 5.5.30, 5.6.8, 5.6.12, 5.6.18, 5.6.21 - 5.6.22, 5.6.28, 5.6.33, 5.6.36, 7.0.2, 7.0.12 - 7.0.13, 7.0.19, 7.0.21, 7.0.25, 7.0.30, 7.0.32, 7.1.1, 7.1.3, 7.1.6, 7.1.8, 7.1.10 - 7.1.12, 7.1.14 - 7.1.16, 7.1.18 - 7.1.19, 7.1.23, 7.1.25, 7.1.30, 7.1.33, 7.2.0, 7.2.4, 7.2.7, 7.2.11 - 7.2.12, 7.2.18, 7.2.21, 7.3.2, 7.3.5 - 7.3.6, 7.4.0 - 7.4.1
["link1"]
Output for 5.2.0, 5.2.3, 5.2.11, 5.2.15 - 5.2.16, 5.3.23, 5.3.25, 5.4.2, 5.4.4, 5.4.8 - 5.4.9, 5.4.17, 5.4.19 - 5.4.20, 5.4.23 - 5.4.24, 5.4.28, 5.4.31, 5.4.39, 5.4.41 - 5.4.44, 5.5.1, 5.5.6, 5.5.9 - 5.5.12, 5.5.15, 5.5.18, 5.5.22 - 5.5.23, 5.5.27 - 5.5.29, 5.5.33 - 5.5.34, 5.5.36, 5.6.0, 5.6.7, 5.6.16 - 5.6.17, 5.6.20, 5.6.23, 5.6.25 - 5.6.26, 5.6.30 - 5.6.31, 5.6.38 - 5.6.39, 7.0.0 - 7.0.1, 7.0.3, 7.0.5 - 7.0.7, 7.0.9 - 7.0.10, 7.0.16 - 7.0.18, 7.0.20, 7.0.22, 7.0.28, 7.1.2, 7.1.4 - 7.1.5, 7.1.7, 7.1.9, 7.1.13, 7.1.17, 7.1.20, 7.1.24, 7.1.27, 7.1.29, 7.1.31, 7.2.1 - 7.2.3, 7.2.8 - 7.2.10, 7.2.14 - 7.2.15, 7.2.17, 7.2.22, 7.2.26, 7.3.0 - 7.3.1, 7.3.3 - 7.3.4, 7.3.7, 7.3.9 - 7.3.10, 7.3.12 - 7.3.13
{"2":"link3"}
Output for 5.2.2, 5.2.5, 5.2.8, 5.2.13, 5.2.17, 5.4.0 - 5.4.1, 5.4.6, 5.4.10 - 5.4.13, 5.4.16, 5.4.18, 5.4.21 - 5.4.22, 5.4.25 - 5.4.27, 5.4.30, 5.4.32 - 5.4.37, 5.4.40, 5.4.45, 5.5.2 - 5.5.3, 5.5.5, 5.5.14, 5.5.16 - 5.5.17, 5.5.19 - 5.5.21, 5.5.24 - 5.5.25, 5.5.31 - 5.5.32, 5.5.35, 5.5.37 - 5.5.38, 5.6.1 - 5.6.6, 5.6.9 - 5.6.11, 5.6.13 - 5.6.15, 5.6.19, 5.6.24, 5.6.27, 5.6.29, 5.6.32, 5.6.34 - 5.6.35, 5.6.37, 5.6.40, 7.0.4, 7.0.8, 7.0.11, 7.0.14 - 7.0.15, 7.0.23 - 7.0.24, 7.0.26 - 7.0.27, 7.0.29, 7.0.31, 7.0.33, 7.1.0, 7.1.21 - 7.1.22, 7.1.26, 7.1.28, 7.1.32, 7.2.5 - 7.2.6, 7.2.13, 7.2.16, 7.2.19 - 7.2.20, 7.2.23 - 7.2.25, 7.3.8, 7.3.11
{"1":"link2"}
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/BiscZ on line 6
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/BiscZ on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/BiscZ on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/BiscZ on line 6

preferences:
207.75 ms | 401 KiB | 325 Q