3v4l.org

run code in 300+ PHP versions simultaneously
<?php $width = $height = 1024; $stepSize = 100; for ($x=0; $x < $width; $x+=$stepSize) { for ($y=0; $y < $height; $y+=$stepSize) { echo "Checking pixel at ($x, $y)"; } }
Output for git.master, git.master_jit, rfc.property-hooks
Checking pixel at (0, 0)Checking pixel at (0, 100)Checking pixel at (0, 200)Checking pixel at (0, 300)Checking pixel at (0, 400)Checking pixel at (0, 500)Checking pixel at (0, 600)Checking pixel at (0, 700)Checking pixel at (0, 800)Checking pixel at (0, 900)Checking pixel at (0, 1000)Checking pixel at (100, 0)Checking pixel at (100, 100)Checking pixel at (100, 200)Checking pixel at (100, 300)Checking pixel at (100, 400)Checking pixel at (100, 500)Checking pixel at (100, 600)Checking pixel at (100, 700)Checking pixel at (100, 800)Checking pixel at (100, 900)Checking pixel at (100, 1000)Checking pixel at (200, 0)Checking pixel at (200, 100)Checking pixel at (200, 200)Checking pixel at (200, 300)Checking pixel at (200, 400)Checking pixel at (200, 500)Checking pixel at (200, 600)Checking pixel at (200, 700)Checking pixel at (200, 800)Checking pixel at (200, 900)Checking pixel at (200, 1000)Checking pixel at (300, 0)Checking pixel at (300, 100)Checking pixel at (300, 200)Checking pixel at (300, 300)Checking pixel at (300, 400)Checking pixel at (300, 500)Checking pixel at (300, 600)Checking pixel at (300, 700)Checking pixel at (300, 800)Checking pixel at (300, 900)Checking pixel at (300, 1000)Checking pixel at (400, 0)Checking pixel at (400, 100)Checking pixel at (400, 200)Checking pixel at (400, 300)Checking pixel at (400, 400)Checking pixel at (400, 500)Checking pixel at (400, 600)Checking pixel at (400, 700)Checking pixel at (400, 800)Checking pixel at (400, 900)Checking pixel at (400, 1000)Checking pixel at (500, 0)Checking pixel at (500, 100)Checking pixel at (500, 200)Checking pixel at (500, 300)Checking pixel at (500, 400)Checking pixel at (500, 500)Checking pixel at (500, 600)Checking pixel at (500, 700)Checking pixel at (500, 800)Checking pixel at (500, 900)Checking pixel at (500, 1000)Checking pixel at (600, 0)Checking pixel at (600, 100)Checking pixel at (600, 200)Checking pixel at (600, 300)Checking pixel at (600, 400)Checking pixel at (600, 500)Checking pixel at (600, 600)Checking pixel at (600, 700)Checking pixel at (600, 800)Checking pixel at (600, 900)Checking pixel at (600, 1000)Checking pixel at (700, 0)Checking pixel at (700, 100)Checking pixel at (700, 200)Checking pixel at (700, 300)Checking pixel at (700, 400)Checking pixel at (700, 500)Checking pixel at (700, 600)Checking pixel at (700, 700)Checking pixel at (700, 800)Checking pixel at (700, 900)Checking pixel at (700, 1000)Checking pixel at (800, 0)Checking pixel at (800, 100)Checking pixel at (800, 200)Checking pixel at (800, 300)Checking pixel at (800, 400)Checking pixel at (800, 500)Checking pixel at (800, 600)Checking pixel at (800, 700)Checking pixel at (800, 800)Checking pixel at (800, 900)Checking pixel at (800, 1000)Checking pixel at (900, 0)Checking pixel at (900, 100)Checking pixel at (900, 200)Checking pixel at (900, 300)Checking pixel at (900, 400)Checking pixel at (900, 500)Checking pixel at (900, 600)Checking pixel at (900, 700)Checking pixel at (900, 800)Checking pixel at (900, 900)Checking pixel at (900, 1000)Checking pixel at (1000, 0)Checking pixel at (1000, 100)Checking pixel at (1000, 200)Checking pixel at (1000, 300)Checking pixel at (1000, 400)Checking pixel at (1000, 500)Checking pixel at (1000, 600)Checking pixel at (1000, 700)Checking pixel at (1000, 800)Checking pixel at (1000, 900)Checking pixel at (1000, 1000)

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44.18 ms | 409 KiB | 8 Q